Diagnostic Routine AS

Diagnostic Routine AS

Diagnostic Overview

B1206:15

Refer to Wiring Diagram Set 23 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions





Pinpoint Test

1. CHECK THE PCM (Powertrain Control Module) FOR A SHORT TO VOLTAGE

1. Ignition OFF.

2. Disconnect: PCM (Powertrain Control Module) C175B.

3. Connect a fused jumper:





4. Ignition ON.

5. Using a scan tool, clear the DTCs (Diagnostic Trouble Codes).

6. Using a scan tool, perform the BCM (Body Control Module) self-test.

NOTE: Disregard DTC (Diagnostic Trouble Code) B1206:11 during this step. DTC (Diagnostic Trouble Code) B1206:11 sets with the PCM (Powertrain Control Module) disconnected.
Is DTC (Diagnostic Trouble Code) B1206:15 still present?






2. CHECK THE CRASH EVENT SIGNAL FOR A SHORT TO VOLTAGE

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280A.

3. Ignition ON.

4. Measure:





Is any voltage present?






3. CHECK THE CRASH EVENT SIGNAL FOR AN OPEN

1. Ignition OFF.

2. Measure:





Is the resistance less than 3 ohms?






4. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Disconnect and inspect all BCM (Body Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Connect the BCM (Body Control Module) connectors. Make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?