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DLN-40 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: TY21C] C1204 4WD SOLENOID C1204 4WD SOLENOID DTC Description INFOID:0000000010755257 DTC DETECTION LOGIC POSSIBLE CAUSE • Internal malfunction of electronic controlled coupling FAIL-SAFE 4WD control changes to front-wheel drive immediately, then 4WD control stops, and the vehicle becomes 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. Turn the ignition switch OFF to ON. 2. Perform self-diagnosis for “ALL MODE AWD/4WD”. Is DTC “C1204” 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:0000000010755258 1. CHECK 4WD SOLENOID POWER SUPPLY (1) 1. Turn the ignition switch OFF. 2. Disconnect 4WD control unit harness connector. 3. Check the voltage between 4WD control unit harness connector and ground. 4. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Check the voltage between 4WD control unit harness connector and ground. Is the inspection result normal? DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition C1204 4WD SOLENOID Malfunction related to 4WD solenoid has been detected. 4WD control unit — Voltage Connector Terminal B5 9 Ground Battery voltage 4WD control unit — Voltage Connector Terminal B5 9 Ground Battery voltage |