Symptom Chart and Symptom Diagnostic Procedures
SYMPTOM CHARTSymptom Chart:
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: All Heated Door Mirrors do not Operate
Heated Door Mirror Circuit (Part 1):
Heated Door Mirror Circuit (Part 2):
CIRCUIT OPERATION
If both of the door mirror heaters do not operate normally it may be due to a malfunction in the rear window defogger system.
TROUBLESHOOTING HINTS
- Malfunction of the rear window defogger system
- The wiring harness or connectors may have loose, corroded or damaged terminals, or terminals pushed back in the connector.
DIAGNOSIS
Required Special Tools:
- 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 defogger.
Q: Does the defogger work normally?
YES : Go to Step 2.
NO : Because of malfunction of the rear window defogger, carry out the troubleshooting (Refer to heater and A/C, Manual A/C Diagnosis).
STEP 2. Check the remote controlled mirror (RH) connector E-01 and junction block connector C-215 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are the remote controlled mirror (RH) connector E-01 and junction block connector C-215 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer to general (electrical), Harness Connector Inspection. Check if the door mirrors works normally.
STEP 3. Check the wiring harness between the remote controlled mirror (RH) connector E-01 (terminal 1) and junction block connector C-215 (terminal 3).
NOTE: Also check intermediate connector C-09 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-09 is damaged, repair or replace the damaged component(s) as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between remote controlled mirror (RH) connector E-01 (terminal 1) and junction block connector C-215 (terminal 3) in good condition?
YES : Go to step 4.
NO : Repair the wiring harness as necessary. Check if all heated door mirrors work normally.
STEP 4. Check remote controlled mirror (LH) connector E-12.
Q: Is remote controlled mirror (LH) connector E-12 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s). Check if all heated door mirrors work normally.
STEP 5. Check the wiring harness between remote controlled mirror (LH) connector E-12 (terminal 1) and junction block connector C-215 (terminal 3).
NOTE: Also check intermediate connector C-25 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-25 is damaged, repair or replace the damaged component(s) as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between remote controlled mirror (RH) connector E-12 (terminal 1) and junction block connector C-215 (terminal 3) in good condition?
YES : The procedure is complete.
NO : Repair the wiring harness as necessary. Check if the all heated door mirrors work 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 either of the heated door mirrors do 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-12 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is remote controlled mirror (LH) connector E-12 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 of the door mirror (LH).
CAUTION: When relocating the car between locations of 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-12.
Q: Is the resistance normal?
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) is operating normally.
STEP 4. Check the ground circuit between remote controlled mirror (LH) connector E-12 and ground for open circuit. Measure the resistance at remote controlled mirror (LH) connector E-12.
1. Disconnect remote controlled mirror (LH) connector E-12 and check at the wiring harness side connector.
2. Measure the resistance value between terminal 3 and ground.
- The resistance should be 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-12 (terminal 3) and ground.
NOTE: Also check intermediate connector C-25 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-25 is damaged, repair or replace the damaged component(s) as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between remote controlled mirror (LH) connector E-12 (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 junction block C-215 for loose, corroded damaged terminal, or terminals pushed back in the connector.
Q: Is junction block C-215 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-12 (terminal 1) and junction block connector C-215 (terminal 3).
NOTE: Also check intermediate connector C-25 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-25 is damaged, repair or replace the damaged component(s) as described in general electrical, Harness Connector Inspection.
Q: Is the wiring harness between remote controlled mirror (LH) connector E-12 (terminal 1) and junction block connector C-215 (terminal 3) 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 the remote controlled mirror (RH) connector E-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is the 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 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 of 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 resistance normal?
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 be 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-09 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-09 is damaged, repair or replace the damaged component(s) as described in general electrical, Harness Connector Inspection.
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 junction block C-215 for loose, corroded damaged terminal, or terminals pushed back in the connector.
Q: Is junction block C-215 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 junction block connector C-215 (terminal 3).
NOTE: Also check intermediate connector C-09 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-09 is damaged, repair or replace the damaged component(s) as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between remote controlled mirror (RH) connector E-01 (terminal 1) and junction block connector C-215 (terminal 3) 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.