P1742

DTC P1742 - AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL CIRCUIT MALFUNCTION

DTC DETECTING CONDITION:
- Two consecutive driving cycles with fault

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How to Clear Diagnostic Trouble Codes. Clear Memory Mode




WIRING DIAGRAM

10DG1: CHECK TRANSMISSION TYPE.

CHECK: Is transmission type AT?

YES: Go to step 10DG2.

NO: Check AT/MT identification circuit.

10DG2: CHECK DRIVING CONDITION.
1. Start and warm-up the engine until the radiator fan makes one complete rotation.
2. Drive the vehicle.

CHECK: Is AT shift control functioning properly?

YES: Go to step 10DG3.

NO: Replace TCM.

10DG3: CHECK ACCESSORY.

CHECK: Are car phone and/or CB installed on vehicle?

YES: Repair grounding line of car phone or CB system.

NO: Replace TCM.