For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 | Does the turn signal lamp operate properly? | -- | Go to Step 3 | Go to Turn Signal Lamps Inoperative in Lighting Systems
3 | Inspect for poor connections at the harness connector of the BCM connector C2. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 6 | Go to Step 4
4 | Test the control circuit of the turn signal switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 6 | Go to Step 5
5 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2