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DLN-56 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: TY21C] P181D ENGINE TORQUE SIGNAL P181D ENGINE TORQUE SIGNAL DTC Description INFOID:0000000010755275 DTC DETECTION LOGIC POSSIBLE CAUSE • Malfunction of engine control system FAIL-SAFE 4WD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then 4WD DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and >> GO TO 2. 2. DTC REPRODUCTION PROCEDURE With CONSULT 1. Drive the vehicle for a while. 2. Stop the vehicle. 3. Perform self-diagnosis for “ALL MODE AWD/4WD”. Is DTC “P181D” detected? YES >> Proceed to diagnosis procedure. Refer to NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident" . NO-2 >> Confirmation after repair: INSPECTION END Diagnosis Procedure INFOID:0000000010755276 1. PERFORM ECM SELF-DIAGNOSIS With CONSULT Perform self-diagnosis for “ENGINE”. YES >> Check the DTC. Refer to (MR20DD). NO >> GO TO 2. 2. CHECK TERMINALS AND HARNESS CONNECTORS Check 4WD control unit pin terminals for damage or loose connection with harness connector. Is inspection result normal? YES >> After turning the ignition switch OFF, perform DTC confirmation procedure again. If DTC “P181D” is detected, Replace 4WD control unit. Refer to DLN-72, "Removal and Installation" NO >> Repair or replace error-detected parts. DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition P181D ENGINE SYSTEM Malfunction related to engine signal has been detected. |