Steering Column

B210D-BATTERY VOLTAGE LOW

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

Possible Causes
RELATED DTC(S) PRESENT IN PCM
INTERMITTENT BATTERY VOLTAGE LOW DTC
(A108) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
(Z907) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
STEERING COLUMN MODULE (SCM

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 >>Refer to the appropriate diagnostic procedure.
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.