Pinpoint Test

1. Disconnect: Accessory Delay Relay.

Do the power windows still operate? 

• Yes: GO to  3.
• No: GO to 2  .

1. Carry out the accessory delay relay component test.

   Refer to OEM Wiring Diagrams - COMPONENT TESTING for schematic and connector information.

Did the accessory delay relay pass the component test? 

• Yes: GO to  4.
• No: INSTALL a new accessory delay relay.

1. Ignition OFF.
2. Disconnect: BCM C2280D.
3. Disconnect: LH Front Window Control Switch C535B (Base) or C504 (XLT or Limited).
4. Ignition ON.
5. Measure:

   BCM			Ground
   C2280D			Ground
   Pin	Circuit	Measurement / Action	Pin	Circuit
   27	CBP01 (BU)		-	Ground

Is any voltage present? 

• Yes: REPAIR the circuit.
• No: GO to 4  .

1. Ignition OFF.
2. Disconnect and inspect all BCM connectors.
3. 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
4. Reconnect the BCM connectors. Make sure they seat and latch correctly.
5. Operate the system and determine if the concern is still present.

Is the concern still present? 

• Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new BCM:

  REFER to BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS (IA) , or

  REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS (IA) .

• 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.