Memory Seat Module (MSMD)

B210D-BATTERY VOLTAGE LOW





For a complete wiring diagram, refer to the wiring information Electrical Diagrams.

- When Monitored:
Engine running, during seat motor operation.

- Set Condition:
This code is set immediately after the Memory Seat Module (MSM) receives a low charging system voltage message over the CAN Interior Bus or detects voltage under 9.5 volts on the (A210) Fused B(+) circuit.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

1. CHECK ECM/PCM FOR CHARGING SYSTEM DTC
1. With the scan tool, read ECM/PCM DTC's.

Are there any Charging System DTC's set in the ECM/PCM?

Yes

- Testing and Inspection and Testing and Inspection or Testing and Inspection for Charging System diagnostic procedures.

No

- Go To 2

2. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, erase all DTC's.
2. Turn the ignition switch to the OFF position then start the engine and operate the driver power seat.
3. With the scan tool, read DTC's.

Does the scan tool display this DTC?

Yes

- Go To 3

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

3. (A210) FUSED B(+) CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Memory Seat Module C1 harness connector.
3. Start the engine and let idle.
4. Measure the voltage on the (A210) Fused B(+) circuit at the Memory Seat Module C1 harness connector and compare to voltage at the vehicle battery.

Is the voltage at the Memory Seat Module connector the same as measured at the battery?

Yes

- Go To 4

No

- Repair the (A210) Fused B(+) circuit as necessary.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

4. (Z913) GROUND CIRCUIT OPEN




1. Turn the ignition off.
2. Using a 12-volt test light connected to 12 volts, check the (Z913) Ground circuit at the Memory Seat Module C1 harness connector.

Does the test light illuminate brightly?

Yes

- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

No

- Repair the (Z913) Ground circuit as necessary.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.