B21C1

B21C1-PTCM LEFT WINDOW/HEADER POWER SUPPLY CIRCUIT

- When Monitored:
With the Ignition Switch in the on position and the Power Top Control Module (PTCM) awake.

- Set Condition:
This code will set by the Power Top Control Module (PTCM) when the Convertible Top is activated and the Header Latch power supply is not detected, or the Left Rear Window is activated and the power supply is not detected.

Always perform the Power Top System Pre-Diagnostic procedure before proceeding. Power Top System Pre-Diagnostic Procedure.

1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase all PTCM DTCs.
3. Try to operate the Power Top from the switch.
4. Wait 30 seconds.
5. With the scan tool, read all PTCM DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (A926) FUSED B(+) CIRCUIT OPEN

NOTE: Make sure Fuse #37 is not open before proceeding.

1. With the scan tool, erase DTCs.
2. Turn the ignition off.
3. Disconnect the PTCM C2 harness connector.
4. Turn the ignition on.
5. Using a 12-volt test light connected to ground, check the (A926) Fused B(+) circuit in the PTCM C2 harness connector.

Does the test light illuminate brightly?

No

- Repair (A926) Fused B(+) circuit for an open from the TIPM to the PTCM C2 connector.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Replace the Power Top Control Module (PTCM) in accordance with the the Service Information.
- Perform the BODY VERIFICATION TEST. Body Verification Test.