GM Service Manual Online
For 1990-2009 cars only

Tools Required

SA9154Z-A Starting and Charging System Tester

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check for Engine Electrical?

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Go to Step 2

Go to Diagnostic System Check - Engine Electrical

2

Start the engine, observe the charge indicator on the instrument panel cluster (IPC) or message in the driver information center (DIC).

Does the charge indicator illuminate or the DIC display a charging system message?

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Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

  1. Turn OFF the ignition.
  2. Connect the red lead of the SA9154Z-A to the battery positive terminal
  3. Connect the grey lead of the SA9154Z-A to the output circuit of the generator.
  4. Start the engine.
  5. Turn On the SA9154Z-A .
  6. Turn Off all vehicle accessories Off.
  7. Follow the SA9154Z-A prompts.
  8. Press CHARGING SYSTEM TEST.

Is the voltage displayed within the specified value?

13.0 V - 15.5 V

Go to Step 4

Go to Step 5

4

Is the generator output current greater than or equal to the load test value given in Generator Usage ?

--

Go to Step 6

Go to Step 5

5

Replace the generator. Refer to Generator Replacement .

Did you complete the replacement?

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Go to Step 6

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6

Operate the vehicle in order to verify the repair.

Did you correct the condition?

--

Generator OK

Go to Step 2