Steering Column

B2102-SYSTEM VOLTAGE LOW

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Continuously.

- Set Condition:
If the voltage to the Steering Column Module (SCM) is below 9 volts for more than one minute.





Diagnostic Test

1. RELATED DTC(S) PRESENT IN PCM
Ignition on, engine not running.
With the scan tool, select View DTCs in the Powertrain Control Module.
Are there any charging system or related battery voltage DTCs present in the PCM?

Yes

- Diagnose and repair the DTC(s).

No

- Go to 2

2. DTC STATUS IS ACTIVE
With the scan tool, select View DTCs in the Steering Column Module.
Is the DTC status Active at this time?

Yes

- Go to 3

No

- Go to 6

3. (A108) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE




Turn the ignition off.
Disconnect the Steering Column Module harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the (A108) Fused B(+) circuit in the Steering Column Module harness connector.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Go to 4

No

- Repair the (A108) Fused B(+) circuit for an open circuit or high resistance.

4. (Z907) GROUND CIRCUIT HIGH RESISTANCE




Using a 12-volt test light connected to 12-volts, check the (Z907) Ground circuit in the Steering Column Module harness connector.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Go To 5

No

- Repair the (Z907) Ground circuit for an open circuit or high resistance.

5. STEERING COLUMN MODULE (SCM)
View repair.


Repair

- Replace the Steering Column Module (SCM).

6. INTERMITTENT BATTERY VOLTAGE LOW DTC
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?

Yes

- Repair as necessary.

No

- Test complete.