For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Verify the following conditions exist before beginning this diagnostic procedure:

• | The related fuses are good

• | The related circuit breaker is good

• | The problem is not caused by installed aftermarket equipment

1 |

1. Turn the ignition switch to the RUN position.
2. Turn the radio on.

Does the radio operate?

--

Go to Step 2

Go to Step 9

2 | With a test light to the ground, backprobe the Body Control Module (BCM) connector C2 terminal F. Does the test lamp light? | -- | Go to Step 3 | Go to Step 6
3 |

1. Disconnect BCM connector C2 and connector C3.
2. Connect a test lamp between the BCM connector C2 terminal F and the BCM connector C3 terminal C1.

Does the test lamp light?

--

Go to Step 4

Go to Step 7

4 | Connect a test lamp between the BCM connector C2 terminal F and terminal A. Does the test lamp light? | -- | Go to Step 5 | Go to Step 8
5 |

1. Test for poor connections BCM connector C2 and connector C3.
2. If OK, replace the BCM, refer to Body Control Module Replacement in Body Control Systems.

Is the repair complete?

--

System OK

--

6 | Repair the open in CKT 102, between the BCM connector C2 terminal F and C200. Is the repair complete? | -- | System OK | --
7 | Repair the open in circuit 650 between the BCM connector C3 terminal C1 and S217. Is the repair complete? | -- | System OK | --
8 | Repair the open in circuit 650 between the BCM connector C2 terminal A and S217. Is the repair complete? | -- | System OK | --
9 |

1. Leave the ignition switch in the RUN position.
2. Using a test lamp connected to ground, backprobe the BCM connector C2 terminal D.

Does the test lamp light?

--

Go to Step 10

Go to Step 13

10 | Using a test lamp connected to ground, backprobe the BCM connector C2 terminal C. Does the test lamp light? | -- | Go to Step 11 | Go to Step 12
11 | Repair the open in circuit 75 between the BCM and the IP fuse block. Is the repair complete? | -- | System OK | --
12 |

1. Test for a poor connection at the BCM connector C2 terminal C and terminal D.
2. If the connections are OK, replace the BCM. Refer to Body Control Module Replacement in Body Controls Systems.

Is the repair complete?

--

System OK

--

13 | Repair the open in circuit 4 between the BCM connector C2 terminal D and S254. Is the repair complete? | -- | System OK | --