For 1990-2009 cars

### Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. Tests for an open in the BCM battery positive voltage circuit(s) and the ignition voltage circuit(s).

2. Tests for an open in the BCM ground circuit(s).

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Schematic Reference: Body Control System Schematics
1 | Did you preform the BCM Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Body Control System
2 | Test the battery positive voltage circuit(s) and the ignition voltage circuit(s) of the BCM for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Diagnostic System Check - Body Control System | Go to Step 3
3 | Test the ground circuit(s) of the BCM for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Diagnostic System Check - Body Control System | Go to Step 4
4 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Diagnostic System Check - Body Control System | Go to Step 5
5 | Replace the BCM. Refer to Body Control Module Replacement . Is the repair complete? | -- | Go to Diagnostic System Check - Body Control System | --