GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Prix 🢒 Engine 🢒 Engine Electrical 🢒 Charge Indicator Always On

Step

Action

Value(s)

Yes

No

Important: 

   • The battery must be in a charged state in order to avoid misdiagnosis.
   • The J 35616-A Connector Test Adapter Kit must be used whenever a diagnostic procedure requires checking or probing a terminal. Using the adapter will ensure that no damage to the terminal will occur, as well as giving an idea of whether contact tension is sufficient. If contact tension seems incorrect, refer to Checking Terminal Contact in General Electrical Diagnosis Procedures for specifics.

1

Use a DMM in order to test ALT SENSE Fuse for an open.

Is there an open in ALT SENSE fuse?

--

Go to Step 2

Go to Step 3

2

Use a DMM in order to test circuit 2740 for a short to ground and then replace the ALT SENSE Fuse.

Is the repair complete?

--

System OK

--

3

Use a DMM in order to test IP IGN Fuse for an open.

Is there an open in I/P IGN Fuse?

--

Go to Step 4

Go to Step 5

4

Use a DMM in order to test circuit 39 for a short to ground and then replace the IP SENSE Fuse.

Is the repair complete?

--

System OK

--

5
  1. Disconnect the PCM C2 connector.
  2. Turn the ignition switch to the RUN position.

Is the charge indicator on?

--

Go to Step 11

Go to Step 6

6
  1. Connect the PCM C2 connector.
  2. Disconnect the generator connector.
  3. Set the gear selector to the PARK position.
  4. Start the engine.
  5. Run the engine over 1200 RPM.

Is the charge indicator on?

--

Go to Step 7

Go to Step 10

7

Use a DMM in order to test circuit 225 for a short to ground.

Is there a short to ground in circuit 225?

--

Go to Step 8

Go to Step 9

8

Repair the short to ground in circuit 225.

Is the repair complete?

--

System OK

--

9

Service the PCM. Refer to Powertrain Control Module Replacement/Programming in Engine Controls - 3.1L or Powertrain Control Module Replacement/Programming in Engine Controls - 3.8L.

Is the repair complete?

--

System OK

--

10

Replace the generator. Refer to Generator Replacement or Generator Replacement .

Is the repair complete?

--

System OK

--

11

Use a DMM in order to test circuit 25 for a short to ground.

Is there a short to ground in circuit 25?

--

Go to Step 12

Go to Step 13

12

Repair the short to ground in circuit 25.

Is the repair complete?

--

System OK

--

13

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

System OK

--