GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Achieva 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Battery Charge Indicator Always On

Step

Action

Value(s)

Yes

No

1
  1. Ensure that the engine is running in idle.
  2. Connect the scan tool.
  3. Monitor the communication from the PCM to the instrument cluster in SDL monitor mode.

Is the lamp terminal reading HIGH?

--

Refer to Engine Controls

Go to Step 2

2
  1. Ensure that the engine is running in idle.
  2. Connect the scan tool.
  3. Monitor the communication from the PCM to the instrument cluster in SDL monitor mode.

Do the F terminal read higher than the specified value?

5 V

Go to Step 3

Go to Step 4

3

Inspect the PCM field input. Refer to Engine Controls.

Is the input correct?

--

System OK

Go to Step 4

4
  1. Ensure that the engine is running in idle.
  2. Connect the scan tool.
  3. Monitor the communication from the PCM to the instrument cluster in SDL monitor mode.

Is the engine speed below specifications?

3000 RPM

Go to Step 5

Go to Step 6

5

Replace the instrument panel. Refer to Instrument Panel Replacement.

Is the repair complete?

--

System OK

--

6

Inspect the RPM signal.

Is the RPM signal high?

--

Refer to Engine Controls

System OK