YES -
Go to step 11.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
11. Check for DTCs with the HDS.
Are any DTCs other than B1837 indicated?
YES -
Go to the indicated DTC's troubleshooting.?
NO -
Go to step 12.
12. Clear the DTCs with the HDS, and wait for 6 seconds.
13. Move the motors shown one at a time, and check the operation time.
- Steering tilt motor up and down
- Steering telescopic motor pulled and pushed
- Power mirror actuator (up, down, left, right)
- Power seat (slide forward/backward, recline forward/backward, front up-down, rear up-down)
Does any motor fail to run smoothly?
YES -
Go to the failed motor test:
- Power tilt/telescopic motor test See: Steering and Suspension/Steering/Steering Column/Tilt Wheel Motor/Testing and Inspection.
- Power mirror actuator test See: Body and Frame/Mirrors/Testing and Inspection/Power Mirror Actuator Test.
- Power seat motor test See: Body and Frame/Seats/Power Seat Motor/Testing and Inspection/Driver's Power Seat Motor Test.
If the motor is OK, check the engagement of the motor gear.?
NO -
Go to the each input test:
- Power seat control unit input test See: Body and Frame/Relays and Modules - Body and Frame/Power Seat Control Module/Testing and
- PInoswpecr ttiioltn//tPeloewsceorp Sice astt eCeorinntgro cl oUnntriot lI nupnuitt iTnepsutt. ?test See: Relays and Modules/Relays and Modules - Steering and Suspension/Relays and
- DMroivdeurl'ess M - PSCteSer uinngit/ Sintepeurti ntegs Ct oSleuem: nP oCwoenrttrroali nM Modaunlaeg/Temesetnint/gC aonmd pIuntsepresc atinodn C.?ontrol Systems/Information Bus/Testing and
Inspection/Component Tests and General Diagnostics/Power Windows (Drivers MPCS Unit) Input Test.?
B1840
DTC Troubleshooting: B1840
DTC B1840:
Tilt Motor Pulse Error
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. Operate the tilt switch in each direction for at least 6 seconds.
4. Check for DTCs with the HDS.
Is DTC B1840 indicated?
