Amplifier (AMP)

B210D-BATTERY VOLTAGE LOW



- When Monitored:
With the ignition on.

- Set Condition:
If the module detects that the battery voltage is less than 9.0 volts for 1 second.





1. CHECK ENGINE DTCs

NOTE: Make sure the battery is fully charged before proceeding.

1. With the scan tool, read Powertrain Control Module (PCM) DTCs.

Are there any active BATTERY OR CHARGING SYSTEM DTCs?

No

- Go To 2

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

2. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase the DTCs.
2. Start the engine and run for two minutes.
3. With the scan tool, read the active DTCs.

Does the scan tool display B210D-BATTERY VOLTAGE LOW as active?

Yes

- Go To 3

No

- Test complete, the condition or conditions that originally set this DTC not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. FUSED B(+) OR GROUND CIRCUIT RESISTED





NOTE: This vehicle has Fused B(+) circuits in cavities 4 and 13 and additional Ground circuits in cavities 9 and 20. Check cavities 4 and 9 then 13 and 20.

1. Disconnect the Radio Amplifier C1 connector
2. Test for resisted Fused B(+) circuits by connecting a 12-volt test light between the Fused B(+) circuits and the (Z910) Ground circuits in the Amplifier connector. 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

- Replace the Radio Amplifier.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Test the Fused B(+) circuits and the Ground circuits to determine which one has the high resistance. Repair the Fused B(+) circuits or the Ground circuits for high resistance.
- Perform the BODY VERIFICATION TEST. Body Verification Test.