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Home >> Honda >> 2003 >> Insight Automatic CVT >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Automatic Transmission (CVT) >> CVT >> DTC Troubleshooting >> DTC P1891: Problem in Start Clutch Control System >> 2001-2004 Models

2001-2004 Models

NOTE: Record all freeze data and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ) before you troubleshoot
  1. Check whether the scan tool or the HDS indicates another code.

    Does the scan tool or the HDS indicate the another code? 

    1. YES  -Do the DTC Troubleshooting for the indicated code(s). Recheck for DTC P1891 after troubleshooting.
    2. NO  -Go to step 2.
  2. Warm up the engine to normal operating temperature (the radiator fan comes on), if necessary.
  3. Turn the ignition switch OFF.
  4. Disconnect solenoid harness connector (8P).
  5. Start the engine, and shift to the D position.
  6. Check whether the vehicle moves.

    Does the vehicle move? 

    1. YES  -Go to step 7.
    2. NO  -Replace the start clutch.
  7. Turn the ignition switch OFF.
  8. Connect solenoid harness connector (8P).
  9. Start the engine, and shift to the D position.
  10. 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)? 

    1. YES  -Go to step 11.
    2. NO  -Replace the lower valve body assembly.
  11. Measure the stall speed RPM in the D position.

    Is the stall speed over 3,500 RPM? 

    1. YES  -Replace the start clutch or transmission.
    2. NO  -The system is OK at this time. If necessary, substitute a known-good TCM (see HOW TO TROUBLESHOOT CIRCUIT AT THE TCM ) and recheck.
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