9000 - 9999: 9036

9036-VOLTAGE UNSTABLE - SBM





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
Fused B(+) voltage to Switch Bank Module is less than 10.5 volts or greater than 15 volts for more than 15 seconds.





Diagnostic Test

1. CHECK FOR ANY POWERTRAIN CONTROL MODULES DTCS

NOTE: Make sure the Battery is in good condition. Using the Midtronics Battery Tester, test the Battery before continuing.

NOTE: Inspect the vehicle for after market accessories that may exceed the Generator System output.

NOTE: Make sure the generator drive belt is in good operating condition.

NOTE: Inspect the fuses in the IPM. If an open fuse is found, use the wire diagram/schematic as a guide, inspect the wiring and connectors for damage.

Turn the ignition on.
With the scan tool, read active PCM DTC's.
Does the scan tool display any active PCM DTC's?

Yes

- Refer to appropriate testing.

No

- Go To 2

2. OPEN FUSED B(+) TO MODULE
Disconnect the Switch Bank Module C1 connector.
Using a 12-volt test light connected to ground, check the Fused B(+) circuit at the C1 connector.
Does the test light illuminate brightly?

No

- Repair the Fused B(+) circuit for an open or high resistance.
- Perform BODY VERIFICATION TEST - VER 1.Verification Tests.

Yes

- Replace the Switch Bank Module.
- Perform BODY VERIFICATION TEST - VER 1.Verification Tests