B1844

DTC Troubleshooting: B1844

DTC B1844:

Power Seat Slide Switch Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Operate the slide switch in each direction for more than 1 second.

4. Check for DTCs with the HDS.

Is DTC B1844 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

5. Turn the ignition switch to LOCK (0).

6. Disconnect power seat control unit connector A (40P).

7. Disconnect the power seat adjustment switch 12P connector.

8. Check for continuity between body ground and power seat control unit connector A (40P) terminals No. 1,No. 7, and No. 24 individually.





Is there continuity?

YES -

Repair a short to ground in the wire(s).

NO -

Go to step 9.

9. Check for continuity between these power seat control unit connector A (40P) terminals:

- No. 1 and No. 7
- No. 1 and No. 24
- No. 7 and No. 24





Is there continuity?

YES -

Repair a short in the wires.

NO -

Go to step 10.

10. Test the power seat adjustment switch Power Seat Adjustment Switch Test/Replacement (With DPMS (Driver's Side)).

Is the switch OK?

YES -

Replace the power seat control unit Testing and Inspection.

NO -

Replace the power seat adjustment switch Power Seat Adjustment Switch Test/Replacement (With DPMS (Driver's Side)).