P0742
TCC STUCK OFF/ON OR MALFUNCTION - P0741/P0742/P0743Function:
Torque converter clutch operation monitoring.
Possible Causes:
Faulty harness wiring/connection (P0743).
Faulty torque converter clutch solenoid (all faults).
Mechanical failure, e.g. slippage (P0704).
Effects:
MIL illuminated.
No TCC control (P0741 & P0743).
Harsh gearshifts or stalling (Fault Code P0742 only).
Remedy:
Repair or renew harness/connectors.
Renew TCC solenoid.
Connections
Troubleshooting Schematic
NOTE: *+12V present only when ignition switched ON.
Key to Schematic Diagram
1. Transmission Control Module
2. Transmission Unit
3. Brake Switch
4. Pressure Switch - Manifold
5. Transmission Fluid Temperature Sensor
6. Input Speed Sensor
7. Output Speed Sensor
8. Engine Control Module
9. Left-hand Heelboard Fuse-box
10. Torque Control Clutch Solenoid
11. Force Motor
12. Shift Solenoid A
13. Shift Solenoid B
14. ABS/Traction Control Control Module
15. Right-hand Heelboard Fuse-box
16. Kickdown Switch