For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check for body control module (BCM) diagnostic trouble codes (DTCs). Refer to Diagnostic Trouble Code (DTC) Displaying in Body Control Systems. Is DTC 25/35 displayed? | -- | Go to Step 2 | Go to Step 3
2 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | System OK | --
3 |

1. Check for a poor connection at the BCM connector C3 terminal C16.
2. Check for a poor connection at the security LED.

Are the connections OK?

--

Go to SECURITY Indicator Inoperative

Go to Step 4

4 |

1. Repair the connections as needed.
2. Disconnect the battery.
3. Re connect the battery.

Is the repair complete?

--

System OK

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