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BRC-170 < DTC/CIRCUIT DIAGNOSIS > [WITH VDC (ESP)] C1197 VACUUM SENSOR C1197 VACUUM SENSOR DTC Description INFOID:0000000010723708 DTC DETECTION LOGIC POSSIBLE CAUSE • Harness or connector FAIL-SAFE Electrical vacuum assistance of brake booster is suspended. DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the ignition switch OFF >> GO TO 2. 2. CHECK DTC DETECTION With CONSULT 1. Turn the ignition switch OFF to ON. 2. Perform self-diagnosis for “ABS”. Is DTC “C1197” detected? YES >> Proceed to BRC-170, "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:0000000010723709 1. CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Check the brake vacuum sensor harness connector for disconnection or looseness. 3. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts, and GO TO 2. 2. PERFORM SELF-DIAGNOSIS (1) With CONSULT 1. Connect the brake vacuum sensor harness connector. 2. Connect the ABS actuator and electric unit (control unit) harness connector. 3. Turn the ignition switch ON. 4. Perform self-diagnosis for “ABS”. Is DTC “C1197” detected? YES >> GO TO 3. NO >> INSPECTION END 3. CHECK BRAKE BOOSTER AND CHECK VALVE DTC Display Item (Trouble diagnosis content) Malfunction detected condition C1197 VACUUM SENSOR When a malfunction is detected in brake vacuum sensor. |