LIGHTING SYSTEM DIAGNOSIS
INTRODUCTION TO LIGHT REMINDER ALARM DIAGNOSIS
A ETACS-ECU is mounted in all vehicles. ETACS-ECU has a light reminder tone alarm function. The light reminder tone alarm function alerts the driver that the lights have not been turned off. If the following symptoms occur, the system may be malfunctioning.
- When the tone alarm does not stop sounding when the ignition key is turned to the "ON" position.
- When the tone alarm does not stop sounding when the lighting switch is turned "OFF."
- When the tone alarm does not stop sounding when the driver's door is closed.
- When the tone alarm does not sound when the ignition key is inserted ("OFF" position), the lighting switch is turned to the "ON" position (HEAD" or "TAIL" position), and the river's door is opened.
LIGHT REMINDER ALARM DIAGNOSIS TROUBLESHOOTING STRATEGY
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find a light reminder alarm fault.
- Gather information from the customer.
- Verify that the condition described by the customer exists.
- Find the malfunction by following the Symptom Chart.
- Confirm that the malfunction is eliminated.
SYMPTOM CHART
Fig. 1: Symptom Chart
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Light Reminder Tone Alarm Function Does Not Work Normally.
Fig. 2: Light Reminder Tone Alarm Circuit Diagram
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Fig. 3: Light Reminder Tone Alarm Circuit Connector Locations
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CIRCUIT OPERATION
- The ETACS-ECU judges the state of the ignition switch by detecting voltage from the ignition switch.
- The ETACS-ECU judges whether the driver's side door is opened or closed by defecting the front door switch (LH) signal.
- The ETACS-ECU judges whether the ignition switch in inserted or removed by defecting the key reminder switch signal.
- The ETACS-ECU judges the state of the column switch (lighting switch) by defecting voltage from the column switch (lighting switch).
- When the river's door is opened (door switch on) with the lighting switch in the on ("TAIL" or "HEAD") position, the tone alarm will sound continuously to remind the driver that the lights (taillights or headlights) are on.
TECHNICAL DESCRIPTION (COMMENT)
The cause is probably an abnormal signal from the lighting switch or a defective driver's side door switch.
TROUBLESHOOTING HINTS
- Malfunction of the driver's side door switch
- Damaged harness or connector
- Malfunction of the ETACS-ECU
DIAGNOSIS
Required Special Tools:
- MB991223: Test Harness Set
- MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991911: MUT-III Main Harness B (Vehicles without CAN communication system)
- MB991529: Diagnostic Trouble Code Check Harness
- STEP 1 Check the input signal (by using pulse check). Check the input signal from the driver's side door switch by using scan tool MB991958.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. - Connect scan tool MB991958 to the data link connector.
- Check that the tone alarm of scan tool MB991958 sounds when the driver's side door is opened.
Q: Does the tone alarm of scan tool MB991958 sound when the input signal enters?
- YES: Replace the ETACS-ECU. Check that the malfunctions are eliminated.
- NO: Go to Step 3.
Fig. 4: Connecting Scan Tool MB991958 To Data Link Connector
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- STEP 2. Check the input signal from the driver's side door switch (by using a voltmeter).
Check the input signals from the following switches:
- Use special tool MB991529 to connect a voltmeter between ground terminal 4 or 5 and ETACS-ECU terminal 9 of the data link connector.
- Check that the voltmeter indicator deflects once when the input signal enters.
Q: Does the voltmeter indicator deflect?
- YES: Replace the ETACS-ECU. Check that the malfunctions are eliminated.
- NO: Go to Step 3.
Fig. 5: Connecting Voltmeter Between Ground Terminal 4 Or 5 And ETACS-ECU Terminal 9 Of Data Link Connector
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- STEP 3. Check the driver's side door switch.
- Remove the driver's side door switch. Refer to DOOR ASSEMBLY.
- Follow the table to check the driver's side door switch continuity.
Fig. 6: Checking Driver'S Side Door Switch Continuity (1 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Q. Is the driver's side door switch in good condition?
- YES: Go to Step 4.
- NO: Replace it. Check that the malfunction is eliminated.
Fig. 7: Checking Driver'S Side Door Switch Continuity (2 Of 2)
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- STEP 4. Check the driver's side door switch ground circuit.
Measure the resistance between the driver's side door switch body (metal section) and ground.
- The measured value should be 2 ohms or less.
Q: Does the measured resistance value correspond with this range?
- YES: Go to Step 5.
- NO: Repair the harness wire or connector. Then go to Step 6.
Fig. 8: Measuring Resistance Between Driver'S Side Door Switch Body (Metal Section) And Ground
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- STEP 5. Check driver's side door switch connector E-33 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is driver's side door switch connector E-33 damaged?
- YES: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION. The tachometer should work normally.
- NO: Go to Step 6.
Fig. 9: Locating Driver'S Side Door Switch Connector E-33 Terminals Identification
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- STEP 6. Check driver's side door switch connector E-33 input circuit
- Disconnect driver's side door switch connector E-33 and the harness side.
Fig. 10: Locating Driver'S Side Door Switch Connector E-33 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the voltage between terminal 2 and ground.
- The measured value should be approximately 5 volts.
Q: Does the measured voltage correspond with this range?
- YES: There is no action to be taken.
- NO: Go to Step 7.
Fig. 11: Measuring Voltage Between Terminal 2 And Ground
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- Disconnect driver's side door switch connector E-33 and the harness side.
- STEP 7. Check the harness wires between driver's side door switch connector E-33 (terminal No. 2) and ETACS-ECU connector D-11 (terminal No. 9).
Fig. 12: Locating Driver's Side Door Switch Connector D-14 And ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 13: Locating Driver's Side Door Switch Connector E-33 And E-42 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After inspecting junction block connector D-14 and intermediate connector E-42, inspect the wire. If junction block connector D-14 and intermediate connector E-42 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Are the harness wires between driver's side door switch connector E-33 (terminal No. 2) and ETACS-ECU connector D-11 (terminal No. 9) in good condition?
- YES: Go to Step 8.
- NO: Repair the harness wires. Then check that the malfunction is eliminated.
- STEP 8. Check for continuity of the key reminder switch.
- Remove the driver's side under cover.
- Remove the column covers, lower and upper.
- Disconnect wiring connector D-16 from the key reminder switch and measure at the key reminder switch side.
- Follow the table below to measure the resistance between terminal numbers 4 and 6.
Fig. 14: Checking Continuity Of Key Reminder Switch (1 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Q: Does the measured resistance value correspond with this range?
- YES: Go to Step 9.
- NO: Replace the key reminder switch. Then check that the malfunction is eliminated.
Fig. 15: Checking Continuity Of Key Reminder Switch (2 Of 2)
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- STEP 9. Check the input signal from the key reminder switch.
Check that the tone alarm stops sounding when terminal number 6 is grounded.
Q: Does the tone alarm stop sounding?
- YES: Go to Step 10.
- NO: Go to Step 12.
Fig. 16: Checking Input Signal From Key Reminder Switch
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- STEP 10. Check key reminder switch connector D-16 for damage for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is key reminder switch connector D-16 in good condition?
- YES: Go to step 11.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 17: Locating Key Reminder Switch Connector D-16 Terminals Identification
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- STEP 11 Check the harness wire between key reminder switch connector D-16 (terminal No. 4) and body ground.
Q: Is the resistance wire between key reminder switch D-16 (terminal No. 4) and body ground in good condition?
- YES: There is no action to be taken.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 18: Locating Key Reminder Switch Connector D-16 Terminals Identification
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- STEP 12. Check the harness wire between key reminder switch connector D-16 (terminal No. 6) and ETACS-ECU connector D-11 (terminal No. 8).
Fig. 19: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 20: Locating Key Reminder Switch Connector D-16 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 21: Locating Intermediate Connector C-72 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking intermediate connector C-72 and D-13, check the wires. If intermediate connector C-72 and D-13 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Is the harness wire between key reminder switch D-16 (terminal No. 6) and ETACS-ECU connector D-11 (terminal No. 8) in good condition?
- YES: Go to Step 13.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
- STEP 13. Measure the voltage at the input signal from the ignition switch.
- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
Fig. 22: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Turn the ignition switch "ON".
- Measure the voltage between terminal number 3 and body ground.
- The measured value should be approximately 12 volts (battery positive voltage).
Q: Does the measured voltage correspond with this range?
- YES: Check that the malfunction is eliminated.
- NO: Go to Step 14.
Fig. 23: Measuring Voltage Between Terminal Number 3 And Body Ground
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- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
- STEP 14 Check ETACS-ECU connector D-11 for damage for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is ETACS-ECU connector D-11 in good condition?
- YES: Go to step 15.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 24: Locating ETACS-ECU Connector D-11 Terminals Identification
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- STEP 15. Check the harness wire between ETACS-ECU connector D-11 (terminal No. 3) and ignition switch (IG1).
Fig. 25: Locating Junction Block Connector D-08 And ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking junction block connector D-08, check the wires. If junction block connector D-08 is damaged, repair or replace it. Refer to HARNESS CONNECTOR INSPECTION. Q: Is the harness wire between ETACS-ECU connector D-11 (terminal No. 4) and ignition switch (IG1)?.
- YES: Replace the ETACS-ECU. Then go to Step 16.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
- STEP 16. Measure the voltage at the input signal from the fusible link number 8.
- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
Fig. 26: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the voltage between terminal number 2 and body ground.
- The measured value should be approximately 12 volts (battery positive voltage).
Q: Does the measured voltage correspond with this range?
- YES: Check that the malfunction eliminated.
- NO: Go to Step 17.
Fig. 27: Measuring Voltage Between Terminal Number 2 And Body Ground
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- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
- STEP 17. Check harness wire between ETACS-ECU connector D-11 (terminal No. 2) and fusible link number 8.
Fig. 28: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking junction block connector D-01 and IOD storage connector A-54X, check the wires. If junction block connector D-01 and IOD storage connector A-54X are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Is the harness wire between ETACS-ECU connector D-11 (terminal No. 2) and fusible link number 8?
- YES: Go to Step 18.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 29: Locating IOD Storage Connector A-54X Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 30: Locating Junction Block Connector D-01 Terminals Identification
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- STEP 18. Measure the voltage at the input signal from the column switch (lighting switch).
- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
Fig. 31: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Turn the lighting switch on ("TAIL" or "HEAD" position).
- Measure the voltage between terminal number 5 and body ground.
- The measured value should be approximately 12 volts (battery positive voltage).
Q: Does the measured voltage correspond with this range?
- YES: Check that the malfunction eliminated.
- NO: Go to Step 19.
Fig. 32: Measuring Voltage Between Terminal Number 5 And Body Ground
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- Remove the ETACS-ECU and measure at the junction block side (connector D-11).
- STEP 19. Check the harness wire between ETACS-ECU connector D-11 (terminal No. 5) and column switch.
Fig. 33: Locating ETACS-ECU Connector D-11 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking junction block connector D-01 and joint connector (3) C-72, check the wires. If junction block connector D-01 and joint connector (3) C-72 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Is the harness wire between ETACS-ECU connector D-11 (terminal No. 5) and column switch?
- YES: Go to Step 20.
- NO: Repair or replace it. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 34: Locating Junction Block Connector D-01 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 35: Locating Joint Connector C-72 Terminals Identification
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- STEP 20. Check for continuity between terminals (except No. 4 and No. 6) of key reminder switch connector D-16.
- Measure at key reminder switch connector D-16 without disconnecting the connector.
- Check that there is no continuity between key reminder switch terminal No. 4 and each terminal (except terminal No. 6), as well as between key reminder switch terminal No. 6 and each terminal (except terminal No. 4).
Q: Does continuity exist between terminals?
- YES: Replace the key reminder switch. If the functions, which are described in "CIRCUIT OPERATION", work normally, the input signal from the key reminder switch should be normal.
- NO: Replace the ETACS-ECU. If the functions, which are described in "CIRCUIT OPERATION", work normally, the input signal from the key reminder switch should be normal.
Fig. 36: Locating Key Reminder Switch Connector D-16 Terminals Identification
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INSPECTION PROCEDURE 2: Daytime Running Light Function Does Not Illuminate. < Vehicles for CANADA >
Fig. 37: Daytime Running Light Circuit Diagram
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Fig. 38: Daytime Running Light Circuit Connector Locations
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CIRCUIT OPERATION
If the ignition switch is turned to the "ON" position, and battery positive voltage will be applied from the daytime running light-ECU to the headlights.
Daytime running light-ECU terminal No. 3 sends a constant voltage to the headlights at a constant frequency. This causes the headlights to dim more than normal low-beam.
When the lighting switch is turned to the "HEAD" position or the passing switch is turned on, daytime running light-ECU terminal No. 3 ceases the voltage supply. This causes the headlights to illuminate at normal low-beam.
TECHNICAL DESCRIPTION (COMMENT)
The cause may be a faulty daytime running light circuit or a faulty daytime running light-ECU.
TROUBLESHOOTING HINTS
- Malfunction of the daytime running light-ECU
- Malfunction of the daytime running light relay
- Damaged harness wires or connectors
DIAGNOSIS
Required Special Tool:
- MB991223: Harness Set
- STEP 1. Check the daytime running light-ECU power supply (battery) circuit at daytime running light-ECU connector A-96.
- Disconnect daytime running light-ECU connector A-96.
Fig. 39: Locating Daytime Running Light - ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the voltage between terminal 1 and ground.
Q: Is the voltage 12 volts (battery positive voltage) between terminal and ground?
- YES: Go to Step 3.
- NO: Go to Step 2.
Fig. 40: Measuring Voltage Between Terminal 1 And Ground
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- Disconnect daytime running light-ECU connector A-96.
- STEP 2. Check daytime running light-ECU connector A-96 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?
- YES: Go to Step 3.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 41: Locating Daytime Running Light - ECU Connector A-96 Terminals Identification
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- STEP 3. Check the harness wires between daytime running light-ECU connector A-96 (terminal No. 1) and fusible link No. 11.
Q: Are the harness wires between daytime running light-ECU connector A-96 (terminal No. 1) and fusible link No. 11 in good condition?
- YES: Go to step 4.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 42: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
- STEP 4. Check the daytime running light-ECU power supply circuit (IG2) at the daytime running light-ECU connector A-96.
- Disconnect the daytime running light-ECU connector A-96.
- Turn the ignition switch "ON" position.
Fig. 43: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the resistance between terminal 2 and ground.
Q: Is battery positive voltage (approximately 12 volts) present?
- YES: Go to Step 7.
- NO: Go to Step 5.
Fig. 44: Measuring Resistance Between Terminal 2 And Ground
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- STEP 5. Check the connector between daytime running light-ECU connector A-96 and ignition switch for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Fig. 45: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking junction block connector D-01 and D-08, check the wires. If junction block connector D-01 and D-08 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Are the connectors and terminals in good condition?
- YES: Go to Step 6.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 46: Locating Junction Block Connector D-01 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 47: Locating Junction Block Connector D-08 Terminals Identification
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- STEP 6. Check the harness wire between daytime running light-ECU connector A-96 (terminal No. 2) and ignition switch.
Fig. 48: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: After checking junction block connector D-01 and D-08, check the wires. If junction block connector D-01 and D-08 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION. Q: Are the harness wire between daytime running light-ECU connector A-96 (terminal No. 2) and ignition switch in good condition?
- YES: Go to Step 7.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 49: Locating Junction Block Connector D-01 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 50: Locating Junction Block Connector D-08 Terminals Identification
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- STEP 7. Check the daytime running light ground circuit at daytime running light connector A-96.
- Disconnect daytime running light connector A-96.
Fig. 51: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the resistance between terminal 6 and ground.
Q: Is resistance between terminal 6 and ground less than 2 ohms?
- YES: Go to Step 9.
- NO: Go to Step 8.
Fig. 52: Measuring Resistance Between Terminal 6 And Ground
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- Disconnect daytime running light connector A-96.
- STEP 8. Check the daytime running light-ECU lighting switch input circuit at daytime running light-ECU A-96.
- Disconnect the daytime running light-ECU.
- Turn the lighting switch "HEAD" position or passing switch "ON".
Fig. 53: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - Measure the voltage between terminal 5 and ground.
Q: Is battery positive voltage (approximately 12 volts) present?
- YES: Go to Step 9.
- NO: Go to Step 10.
Fig. 54: Measuring Voltage Between Terminal 5 And Ground
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- STEP 9. Check the connector between daytime running light-ECU connector A-96 and headlight relay connector A-52X for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is connector between daytime running light-ECU connector A-96 and headlight relay connector A-52X in good condition?
- YES: Go to Step 10.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 55: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 56: Locating Headlight Relay Connector A-52X Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
- STEP 10. Check the harness wire between daytime running light-ECU connector A-96 (terminal No. 5) and headlight relay connector A-52X
Q: Is harness wire between daytime running light-ECU connector A-96 (terminal No. 5) and headlight relay connector A-52X in good condition?
- YES: Go to Step 11.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 57: Locating Daytime Running Light-ECU Connector A-96 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 58: Locating Headlight Relay Connector A-52X Terminals Identification
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- STEP 11. Check the daytime running light relay (lower) and (upper).
- Disconnect the daytime running light relay (lower) and (upper).
- Follow the table below to check for continuity of the daytime running light relay.
Fig. 59: Checking Daytime Running Light Relay (Lower) And (Upper) (1 Of 2)
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Q: Is the daytime running light relay continuity in good condition?
- YES: Go to Step 12.
- NO: Replace the DRL relay (lower) or (upper).
Fig. 60: Checking Daytime Running Light Relay (Lower) And (Upper) (2 Of 2)
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- STEP 12. Check the connector between DRL relay (lower) connector A-97, DRL relay (upper) connector A-98 and column switch connector D-22 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are connector between DRL relay (lower) connector A-97, DRL relay (upper) connector A-98 and column switch connector D-22 in good condition?
- YES: Go to Step 13.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 61: Locating DRL Relay (Lower) Connector A-97, DRL Relay (Upper) Connector A-98 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 62: Locating Column Switch Connector D-22 Terminals Identification
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- STEP 13. Check the harness wires between DRL relay (lower) connector A-97 (terminal No. 1 and 2), DRL relay (upper) connector A-98 (terminal No. 2) and column switch connector D-22 (terminal No. 3 and 6) for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are harness wires between DRL relay (lower) connector A-97, DRL relay (upper) connector A-98 and column switch connector D-22 in good condition?
- YES: Replace the daytime running light-ECU.
- NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION.
Fig. 63: Locating DRL Relay (Lower) Connector A-97, DRL Relay (Upper) Connector A-98 Terminals Identification
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 64: Locating Column Switch Connector D-22 Terminals Identification
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ON-VEHICLE SERVICE
HEADLIGHT AIMING
PRE-AIMING INSTRUCTIONS
- Inspect for badly rusted or faulty headlight assemblies.
- These conditions must be corrected before a satisfactory adjustment can be made.
- Inspect tire inflation, and adjust if necessary.
- If the fuel tank is not full, place a weight in luggage room of vehicle to simulate weight of a full tank [3 kg (6.5 pounds) per gallon.]
- There should be no other load in the vehicle other than driver substituted weight of approximately 70 kg (150 pounds) placed in driver's position.
- Thoroughly clean headlight lenses.
- Place the vehicle on a level floor, perpendicular to a flat screen 7.62 m (25.0 feet) away from the bulb center-marks on the headlight lens.
- Rock vehicle sideways to allow vehicle to assume its normal position.
- Bounce the front suspension through three (3) oscillations by applying the body weight to hood or bumper.
- Four lines of adhesive tape (or equivalent markings) are required on screen or wall:
- Position a vertical tape or mark so that it is aligned with the vehicle center line.
- Measure the distance from the center-marks on the headlight lens to the floor. Transfer the measurement to the screen. Horizontal tape or mark on the screen is for reference of vertical adjustment.
- Measure the distance from the center line of the vehicle to the center of each headlight. Transfer the measurement to the screen. Vertical tape or mark on the screen with reference to the center line of each headlight bulb.
Fig. 65: Measuring Distance From Center Line Of Vehicle To Center Of Each Headlight
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HEADLIGHT ADJUSTMENT
- The low beam headlight will project on the screen upper edge of the beam (cut-off).
- Turn the adjusting screws to achieve the specified low-beam cut-off location on the aiming screen.
Fig. 66: Adjusting Headlight (1 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Standard value:
(Vertical direction) Horizontal center line +/- 50 mm (+/- 2.0 inches)
Fig. 67: Adjusting Headlight (2 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. - When adjusting headlight, disconnect the other headlight harness.
CAUTION: Do not cover a headlight for more than three minutes or the plastic headlight lens will be deformed. - There is no horizontal aim adjustment. Horizontal aim is preset and does not require adjustment. High-beam pattern should be correct when the low-beams are adjusted properly.
LUMINOUS INTENSITY MEASUREMENT
Using a photometer, and following its manufacturer's instruction manual, measure the headlight intensity and check to be sure that the limit value is satisfied.
Limit: 40,000 cd or more
There may be special local regulations pertaining to headlight intensity. Be sure to make any adjustments necessary to satisfy such regulations. If an illuminometer is used to make the measurements, convert its values to photometer values by using the following formula.NOTE: When measuring the intensity, maintain an engine speed of 2,000 r/min, with the battery fully charged.
I = Er2 Where:
- I = intensity (cd)
- E = illumination (lux)
- r = distance (m) from headlights to illuminometer
REPLACEMENT OF REPLACEABLE BULB
- When replacing the right side headlight bulb, remove the resonator.
- Disconnect the connector.
- Remove the locking cap by turning it counterclockwise.
CAUTION: Do not touch the surface of the bulb with hands or dirty gloves as the bulb may pop after a short time. If the surface does become dirty, clean it with alcohol or thinner, and let it dry thoroughly before installing. - Remove the light socket, and then remove the bulb.
Fig. 68: Removing Resonator
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.Fig. 69: Removing Light Socket
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HEADLIGHT
REMOVAL AND INSTALLATION
Fig. 70: Removing And Installing HeadlightWARNING:
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REMOVAL SERVICE POINT
<< A >> HEADLIGHT BEZEL REMOVAL
Using care not to damage the engagement with the headlight, remove the headlight bezel little by little starting from the body center.
Fig. 71: Removing Headlight Bezel
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INSPECTION
LIGHTING SWITCH AND DIMMER/PASSING SWITCH CONTINUITY CHECK
Fig. 72: Checking Continuity Of Lighting Switch And Dimmer/Passing Switch (1 Of 3)
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Fig. 73: Checking Continuity Of Lighting Switch And Dimmer/Passing Switch (2 Of 3)
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Fig. 74: Checking Continuity Of Lighting Switch And Dimmer/Passing Switch (3 Of 3)
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TURN-SIGNAL LIGHT SWITCH CONTINUITY CHECK
Fig. 75: Checking Continuity Of Turn-Signal Light Switch (1 Of 2)
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Fig. 76: Checking Continuity Of Turn-Signal Light Switch (2 Of 2)
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HEADLIGHT RELAY CHECK
Fig. 77: Checking Headlight Relay (1 Of 2)
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Fig. 78: Checking Headlight Relay (2 Of 2)
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DRL RELAY (LOWER AND UPPER) CHECK
Fig. 79: Checking DRL Relay (Lower And Upper) (1 Of 2)
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Fig. 80: Checking DRL Relay (Lower And Upper) (2 Of 2)
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