Sunroof Module (SUNR)

B210D-BATTERY VOLTAGE 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 9.5 volts (motor operating or not). After this code is set, it becomes stored when the voltage exceeds 9.6 volts.





1. CHECK ENGINE DTCs

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

1. With the scan tool, read active ENGINE DTCs.

Are there any active ENGINE BATTERY OR CHARGING SYSTEM DTCs present?

No

- Go To 2

Yes

- Perform the appropriate diagnostic procedure.
- For gas engine applications, Testing and Inspection.

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. Cycle the ignition from on to off three times.
4. Turn the ignition on.
5. With the scan tool, read the DTCs.

Does the scan tool display B210D-BATTERY VOLTAGE LOW in the Sunroof module only?

Yes

- Go To 3

No

- Test complete, the condition or conditions that originally set this DTC are 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 correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (X13) FUSED B(+) CIRCUIT RESISTED





NOTE: To further diagnose the sunroof, it is necessary to lower or remove the headliner.

1. Lower the headliner and gain access to the Sunroof Motor/Module connector.
2. Disconnect the Sunroof Motor/Module harness connector.

NOTE: Make sure the A-Pillar and all sunroof inline connectors are connected before proceeding.

3. Turn the ignition on.
4. Test for a resisted (X13) Fused B(+) circuit by connecting a 12-volt test light between the (X13) Fused B(+) circuit and the (Z909) Ground circuit in the Sunroof Motor/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 Sunroof Motor/Module.
- Programming and Relearning Perform the SUNROOF POSITION CALIBRATION procedure. Sunroof Position Calibration
- Programming and Relearning Perform the EXCESSIVE FORCE LIMITATION (EFL) CALIBRATION procedure. Excessive Force Limitation (EFL) Calibration
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Test the (X13) Fused B(+) and the (Z909) Ground circuits to determine which one has the high resistance. Repair the (X13) Fused B(+) circuit or the (Z909) Ground circuit for high resistance.
- Perform the BODY VERIFICATION TEST. Body Verification Test.