Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
- Clear the DTCs with the HDS.
- Turn the ignition switch to LOCK (0), and then back to ON (II).
- Use the front up-down switch to raise the front of the seat as high as it will go.
- Use the rear up-down switch to raise the rear of the seat as high as it will go.
- Use the slide switch to move the seat to the rear as far as it will go.
- Use the recline switch to move the seat-back forward as far as it will go.
- Memorize this seat position with the memory switches.
- Use the seat switches to move the seat to its opposite limits (front and rear all the way down, seat fully forward, and seat-back fully reclined).
- Recall the seat position with the driving position memory switch.
- Wait for 3 minutes.
- Check for DTCs with the HDS. Are any DTCs indicated? YES - Go to step 12. NO - Intermittent failure. The driving position memory system is OK at this time. Check for loose or poor connections at the each DPMS connectors.
- Check for DTCs with the HDS. Are any DTCs except B1837 indicated? YES - Go to the indicated DTC's troubleshooting. NO - Go to step 13.
- Clear the DTCs with the HDS and wait for 6 seconds.
- Move the power seat (slide forward/backward, recline forward/backward, front up-down, rear up-down) motors one at a time, and check the operation time. Does any motor fail to run smoothly? YES - Go to the «POWER SEAT MOTOR TEST»(ref-294763-S36235478842008081300000) . If the motor is OK, check the engagement of the motor gear. NO - Go to the «POWER SEAT CONTROL UNIT INPUT TEST»(ref-294763-S04625780982008081300000) .