Pinpoint Test A: All Power Windows Are Inoperative
- Refer to POWER WINDOWS
for schematic and connector information.
Normal Operation and Fault Conditions
Possible Sources
- Circuit breaker
- Wiring, terminals or connectors
- Master window control switch
- BCM
Visual Inspection and Pre-checks
- Verify the BCM circuit breaker 25 (30A) is OK.
- A1 CHECK ALL WINDOW OPERATION FROM THE MASTER WINDOW CONTROL SWITCH
- Ignition ON.
- Attempt to operate each window from the master window control switch.
Do any of the windows operate from the master window control switch?
Yes GO to Symptom Chart: Glass, Frames and Mechanisms to diagnose the inoperative window(s). No GO to A2 - A2 CHECK FOR VOLTAGE TO THE MASTER WINDOW CONTROL SWITCH
- Ignition OFF.
- Disconnect: Master Window Control Switch C504B.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C504B-6 Ground
Is the voltage greater than 11 volts?
Yes GO to A3 No GO to A4 - A3 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure:
Positive Lead Measurement / Action Negative Lead C504B-2 Ground
Is the resistance less than 3 ohms?
Yes INSTALL a new master window control switch. REFER to: Front Door Window Control Switch . No REPAIR the circuit. - A4 CHECK FOR A SHORT TO GROUND IN THE POWER WINDOW SYSTEM
- Disconnect: BCM Circuit Breaker 25 (30A).
- Install a fused jumper wire in place of BCM Circuit Breaker 25 (30A).
- Ignition ON.
- Attempt to operate each individual power window in both directions from the master window control switch as well as from each passenger door window control switch.
Did the jumper wire fuse open during the test?
Yes REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. REPAIR the circuit. No If the power windows did operate with the fused jumper wire in place, INSTALL a new circuit breaker. If the power windows did not operate with the fused jumper wire in place, GO to A5 - A5 CHECK THE MASTER WINDOW CONTROL SWITCH VOLTAGE CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: BCM C2280C.
Is the resistance less than 3 ohms?
Yes GO to A6 No REPAIR the circuit. - A6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Inspect the BCM 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 BCM connectors and all other previously disconnected window 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?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) . No The system is operating correctly at this time. The concern may have been caused by poor connections. ADDRESS the root cause of any connector or pin issues.