Vehicle System Interface Module (VSIM)

B210D-BATTERY VOLTAGE LOW





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition switch on.

- Set Condition:
The Vehicle System Integration Module (VSIM) has detected the Fused (B+) input voltage below a calibrated value.





1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. With the scan tool, read the active DTCs.
2. Erase the DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals, and repair any obvious problems.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. VERIFY OPERATION OF THE VEHICLE CHARGING SYSTEM

NOTE: Repair any PCM charging/cranking DTCs before proceeding with this test.

NOTE: Verify the battery is fully charged.

Are any charging system DTCs present?

Yes

- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK (A913) FUSED (B+) CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the VSIM C1 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (A913) Fused (B+) circuit in the VSIM harness connector.

Is the voltage above 10.0 volts?

Yes

- Go To 4

No

- Repair the (A913) Fused (B+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE VSIM
1. Turn the ignition off.
2. Disconnect all VSIM and aftermarket light/siren controller harness connectors.
3. Check for damaged or corroded pins, pinched wires, or damaged connectors, and repair any obvious problems.
4. Connect all VSIM and aftermarket light/siren controller harness connectors.
5. Turn the ignition on.
6. With the scan tool monitor active codes as you work through the following step.
7. Wiggle the wiring harness and connectors of the VSIM and aftermarket light/siren controller.
8. If only stored codes return continue the test until the problem area has been isolated, and repair any obvious problems.

Is B210D-BATTERY VOLTAGE LOW still displayed?

Yes

- Replace the VSIM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair is complete. The problem may have been caused by a loose or corroded terminal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.