Replace the power telescopic motor/position sensor.?
NO -
Go to step 11.
11. At the sensor side, check for continuity between power tilt motor/position sensor 8P connector terminal No. 5 and body ground (motor body).
Is there continuity?
YES -
Replace the power tilt motor/position sensor.?
NO -
Replace the power tilt/telescopic steering control unit.?
B1843
DTC Troubleshooting: B1843
DTC B1843:
Power Seat Control Unit Lost Communication with Power Tilt/Telescopic Steering Control Unit (UART line)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/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. Check for DTCs with the HDS.
Is DTC B1843 indicated?
YES -
Go to step 4.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
4. Move the power tilt/telescopic steering in each direction with the power tilt/telescopic steering switch.
Does the tilt/telescopic steering move in each direction smoothly?
YES -
Go to step 5.
NO -
Go to step 10.
5. Turn the ignition switch to LOCK (0).
