| 1 |
DETERMINE MALFUNCTIONING LOCATION BY PERFORMING PID/DATA MONITOR INSPECTION
|
Yes |
Go to Step 4. |
| No |
Go to the next step. |
| 2 |
INSPECT REAR WINDOW DEFOGGER SWITCH CONDITION BY PERFORMING PID/DATA MONITOR INSPECTION
|
Yes |
Go to the next step. |
| No |
Replace the front climate control unit, then go to Step 13.
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER]
.) |
| 3 |
INSPECT REAR WINDOW DEFOGGER OPERATION REQUEST SIGNAL FROM FRONT CLIMATE CONTROL UNIT BY PERFORMING PID/DATA MONITOR INSPECTION
|
Yes |
NOTE:
- The rear window defogger does not operate normally due to FBCM control malfunction.
Replace the FBCM, then go to Step 13.(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION
.) |
| No |
Replace the front climate control unit, then go to Step 13.
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER]
.) |
| 4 |
INSPECT REAR WINDOW DEFOGGER RELAY
|
Yes |
Go to the next step. |
| No |
Replace the rear window defogger relay, then go to Step 13.
(See RELAY LOCATION
.) |
| 5 |
INSPECT REAR WINDOW DEFOGGER RELAY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
- Verify that the rear window defogger relay is removed.
- Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Measure the voltage at rear window defogger relay terminals D and A (vehicle wiring harness side).
- Is the voltage B+?
|
Yes |
Go to the next step. |
| No |
Inspect the DEFOG 40 A fuse.
- If the fuse is blown:
- Refer to the wiring diagram and verify if there is a common connector between DEFOG 40 A fuse and rear window defogger relay terminals D and A.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which is shorted to ground.
- Replace the fuse.
- If the fuse is damaged:
- If the fuse is normal:
- Refer to the wiring diagram and verify if there is a common connector between positive battery terminal and rear window defogger relay terminals D and A.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
Go to Step 13.
|
| 6 |
INSPECT REAR WINDOW DEFOGGER CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Install the rear window defogger relay.
- Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Switch the ignition ON (engine off or on).
- Turn the rear window defogger switch on.
- Measure the voltage at following terminals (wiring harness-side):
- Rear window defogger terminal 1A
- Heated outer mirror (LH) terminal A (with heated outer mirror)
- Heated outer mirror (RH) terminal A (with heated outer mirror)
- Windshield wiper de-icer relay terminal A (with windshield wiper de-icer)
- Is the voltage B+?
|
Yes |
With windshield wiper de-icer: Go to the next step.
Without windshield wiper de-icer: Go to step 11. |
| No |
Inspect the M.DEF 7.5 A fuse.
- If the fuse is blown:
- Refer to the wiring diagram and verify if there is a common connector between M.DEF 7.5 A fuse and heated outer mirror (LH, RH) terminals A.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which is shorted to ground.
- Replace the fuse.
- If the fuse is damaged:
- If the fuse is normal:
- Refer to the wiring diagram and verify whether or not there is a common connector between the following:
- rear window defogger relay terminal C and rear window defogger terminal 1A
- rear window defogger relay terminal C and heated outer mirror (LH) terminal A (with heated outer mirror)
- rear window defogger relay terminal C and heated outer mirror (RH) terminal A (with heated outer mirror)
- rear window defogger relay terminal C and windshield wiper de-icer relay terminal A
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
Go to Step 13.
|
| 7 |
INSPECT WINDSHIELD WIPER DE-ICER RELAY
|
Yes |
Go to the next step. |
| No |
Replace the windshield wiper de-icer relay, then go to Step 13.
(See RELAY LOCATION
.) |
| 8 |
INSPECT WINDSHIELD WIPER DE-ICER RELAY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
- Verify that the windshield wiper de-icer relay is removed.
- Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Measure the voltage at windshield wiper de-icer relay terminal C (vehicle wiring harness side).
- Is the voltage B+?
|
Yes |
Go to the next step. |
| No |
Inspect the WIPER, DEI 20 A fuse.
|
| 9 |
INSPECT WINDSHIELD WIPER DE-ICER RELAY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify if there is a common connector between windshield wiper de-icer relay terminal D and windshield wiper de-icer terminal A.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground or open circuit to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which is shorted to ground or has an open circuit.
After repair, go to step 13. |
| 10 |
INSPECT WINDSHIELD WIPER DE-ICER
|
Yes |
Go to the next step. |
| No |
Repair the windshield, then go to Step 13. (See WINDSHIELD REMOVAL .)
(See WINDSHIELD INSTALLATION .) |
| 11 |
INSPECT REAR WINDOW DEFOGGER
|
Yes |
Go to the next step. |
| No |
Repair the rear window defogger, then go to Step 13.
(See REAR WINDOW DEFOGGER REPAIR .) |
| 12 |
INSPECT FBCM CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
- Switch the ignition ON (engine off or on).
- Switch the rear window defgger ON.
- Measure the voltage at FBCM terminal 1P (vehicle wiring harness side).
- Is the voltage B+?
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify if there is a common connector between FBCM terminal 1P and rear window defogger relay terminal E.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground or open circuit to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which is shorted to ground or has an open circuit.
After repair, go to the next step. |
| 13 |
VERIFY IF MALFUNCTION IS RESOLVED
- Does the rear window defogger system operate normally?
|
Yes |
Explain the contents of the servicing to the customer. |
| No |
If the malfunction has not been resolved, repeat the inspection from Step 1. |