GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Audible Warnings System Check?

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Go to Step 2

Go to Audible Warnings System Check

2

  1. Disconnect the remote function actuator (RFA) module connector.
  2. Leave the key out of the ignition.

Is the key in ignition warning chime on?

--

Go to Step 3

Go to Step 6

3

Inspect CKT 1845 (LT GRN) for a short to ground.

Is CKT 1845 shorted?

--

Go to Step 4

Go to Step 5

4

Repair CKT 1845 (LT GRN).

Did you complete the repair?

--

Go to Audible Warnings System Check

--

5

Replace the body control module (SBM).

Did you complete the repair?

--

Go to Audible Warnings System Check

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6

  1. Leave the RFA module connector disconnected.
  2. Use a DMM in order to measure the resistance from the RFA module connector terminal A9 to ground.

Is the resistance less than 5 ohms with the key in the ignition, and infinite with the key out of the ignition?

5 ohms

Go to Step 10

Go to Step 7

7

  1. Disconnect C206.
  2. Use the J 39200 in order to measure the resistance from the steering column wiring harness side of connector C206 terminal B8 to terminal B4.

Is the resistance less than 5 ohms with the key in the ignition, and infinite with the key out of the ignition?

5 ohms

Go to Step 9

Go to Step 8

8

Find and repair a short to ground in CKT 80 (LT GRN) within the steering column wiring harness. If the CKT is OK, replace the ignition key warning switch.

Did you complete the repair?

--

Go to Audible Warnings System Check

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9

Repair a short to ground in CKT 80 (LT GRN) between the RFA module connector terminal A9 and C206 terminal B8.

Did you complete the repair?

--

Go to Audible Warnings System Check

--

10

Replace the RFA module.

Did you complete the repair?

--

Go to Audible Warnings System Check

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