Symptom Related Diagnostic Procedures
SYMPTOM CHARTSymptom Chart:
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: All Heated Door Mirrors do not Operate
All Heated Door Mirrors Do Not Operate (Part 1):
All Heated Door Mirrors Do Not Operate (Part 2):
CIRCUIT OPERATION
If both of the door mirror heaters do not operate normally it may be due to a malfunction in the defogger system.
TROUBLESHOOTING HINTS
- Malfunction of the defogger system
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.
DIAGNOSIS
Required Special Tool:
MB991223: Test Harness Set
STEP 1. Check the rear window defogger.
Check that the rear window defogger works normally as follows.
1. Turn the ignition switch to the "ON" position.
2. Push the rear window defogger switch to operate the rear window defogger.
Q : Does the defogger work normally?
YES : Go to Step 2.
NO : Because malfunction of the rear window defogger, carry out the troubleshooting (Refer to Heater, A/C, Ventilation, Manual A/C Diagnosis).
STEP 2. Check joint connector (3) C-103 and junction block connector C-211 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q : Are joint connector (3) C-103and junction block connector C-211 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged connector(s). Refer to General (Electrical), Harness Connector Inspection. Check if the all heated door mirrors works normally.
STEP 3. Check the wiring harness between joint connector (3) C-103 (terminal 28) and junction block connector C-211 (terminal 3).
- Check the power supply line for open circuit.
Q : Is the wiring harness between joint connector (3) C-103 (terminal 28) and junction block connector C-211 (terminal 3) in good condition?
YES : Go to Step 4.
NO : Repair the wiring harness as necessary. Check if the all heated door mirrors works normally.
STEP 4. Check remote controlled mirror (LH) connector E-14.
Q : Is remote controlled mirror (LH) connector E-14 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged connector. Check if the all heated door mirrors works normally.
STEP 5. Check the wiring harness between joint connector (3) C-103 (terminal 26) and remote controlled mirror (LH) E-14 (terminal 1).
NOTE: Also check intermediate connector C-29 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-29 is damaged, repair or replace the damaged connector as described in General (Electrical), Harness Connector Inspection.
- Check the power supply line for open circuit.
Q : Is the wiring harness between joint connector (3) C-103 (terminal 26) and remote controlled mirror (LH) connector E-14 (terminal 1) in good condition?
YES : Go to Step 6.
NO : Repair the wiring harness as necessary. Check if the all heated door mirrors works normally.
STEP 6. Check remote controlled mirror (RH) connector E-01.
Q : Is remote controlled mirror (RH) connector E-01 in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged connector. Check if the all heated door mirrors works normally.
STEP 7. Check the wiring harness between joint connector (3) C-103 (terminal 27) and remote controlled mirror (RH) E-01 (terminal 1).
NOTE: Also check intermediate connector C-13 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-13 is damaged, repair or replace the damaged connector as described in General (Electrical), Harness Connector Inspection.
- Check the power supply line for open circuit.
Q: Is the wiring harness between joint connector (3) C-103 (terminal 27) and remote controlled mirror (RH) connector E-01 (terminal 1) in good condition?
YES : The procedure is complete.
NO : Repair the wiring harness as necessary. Check if the all heated door mirrors works normally.
INSPECTION PROCEDURE 2: The Right or Left Heated Door Mirror does not Operate
Heated Door Mirror Circuit (Part 1):
Heated Door Mirror Circuit (Part 2):
CIRCUIT OPERATION
If the heater function (heated door mirror) of either of the door mirrors does not operate normally, it may be due to malfunctions in the heated door mirror circuit or door mirror.
TROUBLESHOOTING HINTS
- Malfunction of the heated door mirror circuit
- Malfunction of the door mirror
- The wiring harness or connectors may have loose, corroded or damaged terminals, or terminals pushed back in the connector.
DIAGNOSIS
STEP 1. Verify the operation of each heated door mirror.
Q : Which door mirror does not heat?
Door mirror (LH) : Go to Step 2.
Door mirror (RH) : Go to Step 8.
STEP 2. Check remote controlled mirror (LH) connector E-14 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q : Is remote controlled mirror (LH) connector E-14 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. And then check to see that the heater function of the door mirror (LH) operates normally.
STEP 3. Check the heater function of the door mirror (LH).
CAUTION: When relocating the car between locations with extremely different temperatures (warm and cold), leave the car in the location for a while to adapt to the temperature prior to checking it.
Check to see that the resistance shown in the graph is almost satisfied when measuring the resistance between terminal 1 and 3 of the remote controlled mirror (LH) connector E-14.
Q: Is the measured value within the range in the graph?
YES : Go to Step 4.
NO : Replace the door mirror (LH). And then check to see that the heater function of the door mirror (LH) operates normally.
STEP 4. Check the ground circuit between remote controlled mirror (LH) connector E-14 and ground for open circuit. Measure the resistance at remote controlled mirror (LH) connector E-14.
1. Disconnect remote controlled mirror (LH) connector E-14, and check at the wiring harness side connector.
2. Measure the resistance value between terminal 3 and ground.
- The resistance should equal 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 6.
NO : Go to Step 5.
STEP 5. Check the wiring harness between remote controlled mirror (LH) connector E-14 (terminal 3) and ground.
NOTE: Also check intermediate connector C-29 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-29 is damaged, repair or replace the damaged component(s) as described in General (Electrical), Harness Connector Inspection.
- Check the ground wires for open circuit.
Q: Is the wiring harness between remote controlled mirror (LH) connector E-14 (terminal 3) and ground in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged. Repair the wiring harness as necessary. And then check to see that the heater function of the door mirror (LH) operates normally.
STEP 6. Check joint connector (3) C-103 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is joint connector (3) C-103 in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. And then check to see that the heater function of the door mirror (LH) operates normally.
STEP 7. Check the wiring harness between remote controlled mirror (LH) connector E-14 (terminal 1) and joint connector (3) C-103 (terminal 26).
NOTE: Also check intermediate connector C-29 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-29 is damaged, repair or replace the damaged component(s) as described in General (Electrical), Harness Connector Inspection.
- Check the power supply line for open circuit.
Q: Is the wiring harness between remote controlled mirror (LH) connector E-14 (terminal 1) and joint connector (3) C-103 (terminal 26) in good condition?
YES : No action is necessary and testing is complete.
NO : Repair the wiring harness as necessary. And then check to see that the heater function of the door mirror (LH) operates normally.
STEP 8. Check remote controlled mirror (RH) connector E-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is remote controlled mirror (RH) connector E-01 in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. And then check to see that the heater function (heated door mirror) of the door mirror (RH) operates normally.
STEP 9. Check the heater function of the door mirror (RH).
CAUTION: When relocating the car between locations with extremely different temperatures (warm and cold), leave the car in the location for a while to adapt to the temperature prior to checking it.
Check to see that the resistance shown in the graph is almost satisfied when measuring the resistance between terminal 1 and 3 of the door mirror (RH) connector E-01.
Q: Is the measured value within the range in the graph?
YES : Go to Step 10.
NO : Replace the door mirror (RH). And then check to see that the heater function of the door mirror (RH) operates normally.
STEP 10. Check the ground circuit between remote controlled mirror (RH) connector E-01 and ground for open circuit. Measure the resistance at remote controlled mirror (RH) connector E-01.
1. Disconnect remote controlled mirror (RH) connector E-01, and check at the wiring harness side connector.
2. Measure the resistance value between terminal 3 and ground.
- The resistance should equal 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 12.
NO : Go to Step 11.
STEP 11. Check the wiring harness between remote controlled mirror (RH) connector E-01 (terminal 3) and ground.
NOTE: Also check intermediate connector C-13 and joint connector C-103 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-13 and joint connector C-103 is damaged, repair or replace the damaged component(s) as described in General (Electrical), Harness Connector Inspection.
- Check the ground wires for open circuit.
Q: Is the wiring harness between remote controlled mirror (RH) connector E-01 (terminal 3) and ground in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged. Repair the wiring harness as necessary. And then check to see that the heater function of the door mirror (RH) operates normally.
STEP 12. Check joint connector (3) C-103 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is joint connector (3) C-103 in good condition?
YES : Go to Step 13.
NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. And then check to see that the heater function of the door mirror (RH) operates normally.
STEP 13. Check the wiring harness between remote controlled mirror (RH) connector E-01 (terminal 1) and joint connector (3) C-103 (terminal 27).
NOTE: Also check intermediate connector C-13 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-13 is damaged, repair or replace the damaged component(s) as described in General (Electrical), Harness Connector Inspection.
- Check the power supply line for open circuit.
Q: Is the wiring harness between the remote controlled mirror (RH) connector E-01 (terminal 1) and joint connector (3) C-103 (terminal 27) in good condition?
YES : No action is necessary and testing is complete.
NO : Repair the wiring harness as necessary. And then check to see that the heater function of the door mirror (RH) operates normally.