P1891

DTC P1891: Problem in Start Clutch System

NOTE: Record all freeze data and review General Troubleshooting Information before you troubleshoot.

1. Check whether the D indicator indicates another code.
Does the D indicator indicate another code?
YES-Perform the Troubleshooting Flowchart for the indicated Code(s). Recheck for DTC P1891 after troubleshooting.
NO-Go to step 2.
2. Turn the ignition switch OFF.
3. Disconnect solenoid harness connector (8P).
4. Start the engine, and shift to the D position.
5. Check whether the vehicle moves.
Does the vehicle move?
YES-Go to step 6.
NO-The start clutch is faulty, replace the transmission.
6. Turn the ignition switch OFF.
7. Reconnect solenoid harness connector (8P).
8. Start the engine, and shin to the D position.
9. Check whether the vehicle creeps and check the creeping speed on level ground.
Does the vehicle creep and is the creeping speed about 3 mph (5 km/h)?
YES-Go to step 10.
NO-Replace the lower valve body.
10. Measure the stall speed.
Is the stall speed over 3,500 rpm?
YES-The start clutch is faulty, replace the transmission.
NO-Go to step 11.
11. Warm up the engine to normal operating temperature (the radiator fan comes on), if necessary.
12. Check whether the start clutch problem appears again.
Does the problem appear again?
YES-The start clutch is faulty, replace the transmission.
NO-The system is OK at this time.