Important: The factory sets the theft deterrent shock sensor to a middle range of sensitivity. Depending on you area or usage, the factory setting may be too sensitive, or not sensitive enough. Make sure that the tamper label on the knob that adjusts the shock sensor is not broken or altered. If the label is broken or altered, the shock sensor may be misadjusted to a less sensitive setting.

1. Enter the Body Control Module (BCM) diagnostic mode. Refer to Diagnostic Trouble Code (DTC) Displaying in Body Control Systems.
2. Access the theft deterrent shock sensor.
3. While in the diagnostic mode, tap the shock sensor with your index finger.

Does the BCM chime sound when you tap the shock sensor?

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Go to Step 2

Go to Step 3

The shock sensor may be misadjusted. In order to adjust the shock sensor, refer to Shock Sensor Replacement .

Is the adjustment complete?

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System OK

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1. Disconnect the shock sensor connector.
2. Connect a test lamp between the shock sensor connector terminal A and terminal C.

Does the test lamp light?

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Go to Step 7

Go to Step 4

Connect a test lamp between the shock sensor terminal A and ground.

Does the test lamp light?

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Go to Step 6

Go to Step 5

Repair the open in circuit 640 between S211 and the shock sensor terminal A.

Is the repair complete?

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System OK

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Repair the open in circuit 650 between S217 and the shock sensor terminal C.

Is the repair complete?

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System OK

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Connect a test lamp between the shock sensor harness connector terminal D and ground.

Does the BCM chime sound when the test lamp is connected (the horn may also sound)?

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Go to Step 8

Go to Step 13

Connect a test lamp between the shock sensor harness connector terminal B and ground.

Does the BCM chime sound when the test lamp is connected (the horn may also sound)?

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Go to Step 9

Go to Step 10

1. Check for poor connections at the shock sensor.
2. If the connections are OK, replace the shock sensor. Refer to Shock Sensor Replacement .

Is the repair complete?

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System OK

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Backprobe BCM connector C3 terminal D14 with a test lamp connected to ground.

Does the BCM chime sound when the test lamp is connected (the horn may also sound)?

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Go to Step 11

Go to Step 12

Repair the open in circuit 1828 between the BCM and the shock sensor.

Is the repair complete?

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System OK

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1. Check for a poor connection at the BCM connector C3 terminal D14.
2. If the connection is OK, Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems.

Is the repair complete?

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System OK

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Backprobe BCM connector C3 terminal D2 with a test lamp connected to ground.

Does the BCM chime sound when the test lamp is connected (the horn may also sound)?

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Go to Step 14

Go to Step 15

Repair the open in circuit 263 between the BCM and the shock sensor.

Is the repair complete?

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System OK

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1. Check for a poor connection at the BCM connector C3 terminal D2.
2. If the connection is OK, Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems.

Is the repair complete?

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System OK

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