Inspection Procedure 3: When the Reverse Gear is Engaged, the Inside Rear View Mirror Can not be Set to Day Mode.: Diagnosis
Required Special Tools:
- MB991223: Harness Set
- STEP 1. Check the automatic anti-glare inside mirror.
Darken the interior of the vehicle and shine a flash light in front and at the back of the automatic anti-glare inside mirror to check it for proper operation.
Q: Is the automatic anti-glare inside mirror normal?
YES : Go to Step 2.
NO: Go to Step 4.
- STEP 2. Confirm the transaxle.
Q: Is the transaxle M/T or A/T?
M/T : Go to Step 3.
A/T : Go to Step 10.
- STEP 3. Check the backup light switch.
Remove the backup light switch. Then check continuity between the switch terminals.
BACKUP LIGHT SWITCH CHECKSWITCH CONDITION CONTINUITY Pressed Open circuit Released Less than 2 ohms Q: Is the backup light switch in good condition?
YES : Go to Step 4.
NO: Replace the backup light switch. Then go to Step 17.
- STEP 4. Check the backup light switch power supply circuit at the backup light switch connector B-107.
- Disconnect the backup light switch connector B-107, and measure at the harness side.
- Turn the ignition switch to "ON" position.
- Measure the voltage between terminal 1 and ground.
- The value should be approximately 12 volts.
Q: Does the measured voltage correspond with this range?
YES : Go to Step 7.
NO: Go to Step 5.
- STEP 5. Check the backup light switch connector B-107 for damage.
Q: Is the backup light switch connector B-107 in good condition?
YES : Go to Step 6.
NO: Repair or replace the connector. Then go to Step 17.
- STEP 6. Check the wiring harness between the backup light switch connector B-107 (terminal 1) and the ignition switch (IG1).
Courtesy of DAIMLERCHRYSLER CORPORATION
NOTE: Also check junction block connector C-311 and C-312, joint connector C-25. If junction block connector C-311 or C-312, joint connector C-25 are damaged, repair or replace the connectors. Refer to , HARNESS CONNECTOR INSPECTION .Q: Is the wiring harness between the backup light switch connector B-107 (terminal 1) and the ignition switch (IG1) in good condition?
YES : Go to Step 17.
NO: Repair the wiring harness. Then go to Step 7.
- STEP 7. Check the backup light switch input circuit at the automatic anti-glare inside mirror connector D-04.
- Disconnect the automatic anti-glare inside mirror connector D-04 and measure at the harness side.
- Turn the ignition switch to "ON" position.
- Turn the backup light switch to "ON" position.
- Measure the voltage between terminal 9 and ground.
- The valve should be approximately 12 volts.
Q: Does the measured voltage correspond with this range?
YES : Replace the automatic anti-glare inside mirror. Refer to INSIDE REAR VIEW MIRROR . Then go to Step 17.
NO: Go to Step 8.
- STEP 8. Check the backup light switch connector B-107 and automatic anti-glare inside mirror connector D-04 for damage.
Q: Are the backup light switch connector B-107 and automatic anti-glare inside mirror connector D-04 in good condition?
YES : Go to Step 9.
NO: Repair or replace the connector. Then go to Step 17.
- STEP 9. Check the wiring harness between the backup light switch connector B-107 (terminal 2) and automatic anti-glare inside mirror connector D-04 (terminal 9).
NOTE: Also check joint connector C-25 and C-28. If joint connector C-25 or C-28 is damaged, repair or replace the connector. Refer to , HARNESS CONNECTOR INSPECTION .
Q: Is the wiring harness between the backup light switch connector B-107 (terminal 2) and automatic anti-glare inside mirror connector D-04 (terminal 9) in good condition?
YES : Replace the automatic anti-glare inside mirror. Refer to INSIDE REAR VIEW MIRROR . Then go to Step 17.
NO: Repair the wiring harness. Then go to Step 17.
- STEP 10. Check the transmission range switch. TRANSMISSION RANGE SWITCH CHECK
ITEMS TERMINAL CONNECTION OF TESTER SPECIFIED CONDITION P 3 - 8, 9 - 10 Less than 2 ohms. R 7 - 8 N 4 - 8, 9 - 10 D 1 - 8 3 5 - 8 2 2 - 8 L 6 - 8 NOTE: For vehicles with sport mode, four positions (P, R, N, D) are used.Q: Is the switch operating properly?
YES : Go to Step 11.
NO: Repair the transmission range switch. Then go to Step 17.
- STEP 11. Check the transmission range switch power supply circuit at the transmission range switch connector B-111.
- Disconnect the transmission range switch connector B-111, and measure at the harness side.
- Turn the ignition switch to "ON" position.
- Measure the voltage between terminal 8 and ground.
- The value should be approximately 12 volts.
Q: Does the measured voltage correspond with this range?
YES : Go to Step 14.
NO: Go to Step 12.
- STEP 12. Check transmission range switch connector B-111 for damage.
Q: Is transmission range switch connector B-111 in good condition?
YES : Go to Step 13.
NO: Repair or replace the connector. Then go to Step 17.
- STEP 13. Check the wiring harness between transmission range switch connector B-111 (terminal 8) and the ignition switch (IG1).
NOTE: Also check junction block connector C-311 and C-312, joint connector C-25. If junction block connector C-311 or C-312, joint connector C-25 are damaged, repair or replace the connectors. Refer to , HARNESS CONNECTOR INSPECTION .
Q: Is the wiring harness between transmission range switch connector B-111 (terminal 8) and the ignition switch (IG1) in good condition?
YES : Go to Step 17.
NO: Repair the wiring harness. Then go to Step 14.
- STEP 14. Check the transmission range switch input circuit at the automatic anti-glare inside mirror connector D-04.
- Disconnect the automatic anti-glare inside mirror connector D-04 and measure at the harness side.
- Turn the ignition switch to "ON" position.
- Measure the voltage between terminal 9 and ground.
- The value should be approximately 12 volts.
Q: Does the measured voltage correspond with this range?
YES : Repair the automatic anti-glare inside mirror. Refer to INSIDE REAR VIEW MIRROR . Then go to Step 17.
NO: Go to Step 15.
- STEP 15. Check the transmission range switch connector B-111 and automatic anti-glare inside mirror connector D-04 for damage.
Q: Are the transmission range switch connector B-111 and automatic anti-glare inside mirror connector D-04 in good condition?
YES : Go to Step 16.
NO: Repair or replace the connector. Then go to Step 17.
- STEP 16. Check the wiring harness between the transmission range switch connector B-111 (terminal 7) and the automatic anti-glare inside mirror connector D-04 (terminal 9).
NOTE: Also check joint connector C-25 and C-28. If joint connector C-25 or C-28 is damaged, repair or replace the connector. Refer to , HARNESS CONNECTOR INSPECTION .
Q: Is the wiring harness between the transmission range switch connector B-111 (terminal 7) and the automatic anti-glare inside mirror connector D-04 (terminal 9) in good condition?
YES : Replace or repair the automatic anti-glare inside mirror. Refer to INSIDE REAR VIEW MIRROR . Then go to Step 17.
NO: Repair the wiring harness. Then go to Step 17.
- STEP 17. Check the symptoms
Q: When the reverse gear is engaged, is the automatic anti-glare inside mirror set to the day mode?
YES : There is no action to be taken.
NO: Replace the inside rear view mirror. Refer to INSIDE REAR VIEW MIRROR .