B1DA7

B1DA7-SWITCH POWER SUPPLY CIRCUIT LOW

For a complete wiring diagram refer to the Wiring Information Electrical Diagrams.

- When Monitored:
At all times.

- Set Condition:
Anytime the module senses voltage input below 9.0 volts for over 15 seconds, this code will set.





1. CHECK ENGINE DTC's

NOTE: Ensure the battery is fully charged before proceeding.

1. With the scan tool, read ENGINE DTCs

Are there any BATTERY OR CHARGING SYSTEM DTCs?

No

- Go To 2

Yes

- Refer to 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 2 minutes.
3. With the scan tool, read DTCs.

Does the scan tool display B210D-BATTERY VOLTAGE LOW?

Yes

- Go To 3

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (A215) FUSED B(+) CIRCUIT RESISTED





NOTE: The graphic shows the Driver Door Module. The Passenger Door Module is similar.

1. Disconnect the Door Module C1 connector
2. Test for a resisted (A215) Fused B(+) circuit by connecting a 12-volt test light between the (A215) Fused B(+) circuit and the (Z- - -) Ground circuit in the Door Module 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 Door Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Test the (A215) Fused B(+) and the (Z- - -) Ground circuits to determine which one has the high resistance. Repair the (A215) Fused B(+) circuit or the (Z- - -) Ground circuit for high resistance.
- Perform the BODY VERIFICATION TEST. Body Verification Test.