The Defrost System Does Not Shut Off Automatically

B1 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Ignition OFF.
Disconnect: Heated Rear Window Element C402A .
Disconnect: FCIM C2402A .
Ignition ON.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C402A-1		Ground

Is any voltage present?

Yes : GO to B2
No : GO to B4

B2 CHECK THE REAR WINDOW DEFROST RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: BJB C1035A .

Measure:

Positive Lead	Measurement/Action	Negative Lead
C1035A-23		Ground

Is the resistance greater than 10, 000 ohms?

Yes : GO to B3
No : REPAIR the circuit.

B3 CHECK THE REAR WINDOW DEFROST RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Measure:

Positive Lead	Measurement/Action	Negative Lead
C1035A-4		Ground

Is any voltage present?

Yes : REPAIR the circuit.
No : INSTALL a new BJB .

B4 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all the FCIM connectors.
- Repair:
  - corrosion (install new connector or terminals - clean module pins)
  - damaged or bent pins - install new terminals/pins as necessary
  - pushed-out pins - install new pins as necessary
- Reconnect the FCIM connectors and all previously disconnected rear window defrost system connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
1. Yes : CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new FCIM . REFER to: FRONT CONTROLS INTERFACE MODULE (FCIM) .
  REFER to: FRONT CONTROLS INTERFACE MODULE (FCIM) .
  
  REFER to: FRONT CONTROLS INTERFACE MODULE (FCIM) .
2. No : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.