POWER SUPPLY AND GROUND CIRCUIT
POWER WINDOW MAIN SWITCH : Description
BCM supplies power.
It operates each power window motor via corresponding power window switch and makes window move up/down when main power window and door lock/unlock switch is operated. POWER SUPPLY AND GROUND CIRCUIT
POWER WINDOW MAIN SWITCH : Diagnosis Procedure
Main Power Window And Door Lock/unlock Switch Power Supply Circuit Check
CHECK POWER SUPPLY CIRCUIT
Turn ignition switch ON.
Check voltage between main power window and door lock/unlock switch connectors (A and B) and ground.
Is the measurement value within the specification?
YES >> GO TO 3
NO >> GO TO 2
CHECK HARNESS CONTINUITY
Turn ignition switch OFF.
Disconnect BCM and main power window and door lock/unlock switch.
Check continuity between BCM connector (A) and main power window and door lock/unlock switch connectors (B and C).
Check continuity between BCM connector and ground.
Is the Inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
CHECK GROUND CIRCUIT
Turn ignition switch OFF.
Disconnect main power window and door lock/unlock switch.
Check continuity between main power window and door lock/unlock switch connector and ground.
Is the Inspection result normal?
YES >> Replace main power window and door lock/unlock switch. Refer to See: Power Window Switch\Service and Repair\LH Only Anti-Pinch-Sedan .
After that, refer to See: Programming and Relearning\Power Supply And Ground Circuit\Power Window Main Switch\LH Only Anti-Pinch-Sedan .
NO >> Repair or replace harness.
CHECK BCM OUTPUT SIGNAL
Connect BCM.
Turn ignition switch ON.
Check voltage between BCM connector and ground.
Is the measurement value within the specification?
YES >> Check main power window and door lock/unlock switch output signal (rear power window switch
LH) GO TO 5
YES >> Check main power window and door lock/unlock switch output signal (rear power window switch
RH) GO TO 6
NO >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair .
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POWER WINDOW SWITCH LH)
Connect main power window and door lock/unlock switch.
Turn ignition switch ON.
Check voltage between main power window and door lock/unlock switch and ground.
Is the measurement value within the specification?
YES >> GO TO 7
NO >> Replace main power window and door lock/unlock switch. Refer to See: Power Window Switch\Service and Repair\LH Only Anti-Pinch-Sedan . After that, refer to See: Programming and Relearning\Power Supply And Ground Circuit\Power Window Main Switch\LH Only Anti-Pinch-Sedan .
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POWER WINDOW SWITCH RH)
Connect main power window and door lock/unlock switch.
Turn ignition switch ON.
Check voltage between main power window and door lock/unlock switch and ground.
Is the measurement value within the specification?
YES >> GO TO 8
NO >> Replace main power window and door lock/unlock switch. Refer to See: Power Window Switch\Service and Repair\LH Only Anti-Pinch-Sedan . After that, refer to See: Programming and Relearning\Power Supply And Ground Circuit\Power Window Main Switch\LH Only Anti-Pinch-Sedan .
CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH LH)
Turn ignition switch OFF.
Disconnect main power window and door lock/unlock switch and rear power window switch LH.
Check continuity between main power window and door lock/unlock switch connector (A) and rear power window switch LH connector (B).
Check continuity between main power window and door lock/unlock switch connector (A) and ground.
Is the Inspection result normal?
YES >> GO TO 9
NO >> Repair or replace harness.
CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH RH)
Turn ignition switch OFF.
Disconnect main power window and door lock/unlock switch and rear power window switch RH.
Check continuity between main power window and door lock/unlock switch connector (A) and rear power window switch RH connector (B).
Check continuity between main power window and door lock/unlock switch connector and ground.
Is the Inspection result normal?
YES >> GO TO 9
NO >> Repair or replace harness.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH Check main power window and door lock/unlock switch. Refer to See: Component Inspection\LH Only Anti-Pinch-Sedan . Is the Inspection result normal?
YES >> Check intermittent incident. Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident .
NO >> Replace main power window and door lock/unlock switch. Refer to See: Power Window Switch\Service and Repair\LH Only Anti-Pinch-Sedan . After that, refer to See: Programming and Relearning\Power Supply And Ground Circuit\Power Window Main Switch\LH Only Anti-Pinch-Sedan .