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C1209 MODE SW DLN-151 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: TY30A] C E F G H I J K L M A B DLN N O P C1209 MODE SW DTC Description INFOID:0000000011004004 DTC DETECTION LOGIC POSSIBLE CAUSE • Malfunction of 4WD mode switch 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. Start the engine. CAUTION: Stop the vehicle. 2. Operate 4WD mode switch to each position. 3. Perform self-diagnosis for “ALL MODE AWD/4WD”. Is DTC “C1209” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-151, "Diagnosis Procedure" . NO-1 >> To check malfunction symptom before repair: Refer to GI-44, "Intermittent Incident" NO-2 >> Confirmation after repair: INSPECTION END Diagnosis Procedure INFOID:0000000011004005 1. CHECK 4WD MODE SWITCH Check 4WD mode switch. Refer to DLN-153, "Component Inspection" . Is the inspection result normal? YES >> GO TO 2. NO >> Replace 4WD mode switch. Refer to DLN-180, "Removal and Installation" 2. CHECK 4WD MODE SWITCH SIGNAL CIRCUIT 1. Disconnect 4WD control unit harness connector. 2. Check the continuity between 4WD control unit harness connector and 4WD mode switch harness con- DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition C1209 MODE SW More than two switch inputs are simultaneously detected |