Contents Section: Anti-Lock Braking System - Diagnostics: Diagnosis All sections

Trouble Code Does Not Appear Subaru Forester SF рестайлинг

Trouble Code Does Not Appear

DIAGNOSIS

  1. Diagnosis circuit is open.

TROUBLE SYMPTOM

  1. The ABS warning light turns on or off normally but the start code cannot be read out in the diagnostic mode.

WIRING DIAGRAM

Wiring Diagram. Scheme 30

Scheme 30: Wiring Diagram

Scheme 31

Scheme 31

Scheme 32

Scheme 32
  1. 7C1: CHECK DIAGNOSIS TERMINAL. Measure resistance between diagnosis terminals (B81) and chassis ground. Terminals Diagnosis terminal (A) - Chassis ground: Diagnosis terminal (B) - Chassis ground: (Scheme 31): Measuring Resistance Between Diagnosis Terminals (B81) & Chassis Ground CHECK: Is the resistance less than 0.5 ohm? YES: Go to step 7C2. NO: Repair diagnosis terminal harness.
  2. 7C2: CHECK DIAGNOSIS LINE. Turn ignition switch to OFF. Connect diagnosis terminal (B81) to diagnosis connector (B82) No. 6. Disconnect connector from ABSCM & H/U. Measure resistance between ABSCM & H/U connector and chassis ground. Connector & terminal (F49) No. 4 - Chassis ground: (Scheme 32): Measuring Resistance Between ABSCM & H/U Connector & Chassis Ground CHECK: Is the resistance less than 0.5 ohm? YES: Go to step 7C3. NO: Repair harness connector between ABSCM & H/U and diagnosis connector.
  3. 7C3: CHECK POOR CONTACT IN ABSCM & H/U CONNECTOR. CHECK: Is there poor contact in ABSCM & H/U connector? YES: Repair connector. NO: Replace ABSCM & H/U, see «ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM & H/U)»(ref-175571-S23393250682005050600000).

Diagnostics Trouble Code Chart By ABS Warning Light. Scheme 33

Scheme 33: Diagnostics Trouble Code Chart By ABS Warning Light
DTCDescription
CODE 21, 23, 25, 27ABNORMAL ABS SENSOR (OPEN CIRCUIT OR INPUT VOLTAGE TOO HIGH)
CODE 22, 24, 26, 28ABNORMAL ABS SENSOR (ABNORMAL ABS SENSOR SIGNAL)
CODE 29ABNORMAL ABS SENSOR SIGNAL (ANY ONE OF FOUR)
CODE 31, 33, 35, 37ABNORMAL INLET SOLENOID VALVE CIRCUIT(S) IN ABSCM & H/U
CODE 32, 34, 36, 38ABNORMAL OUTLET SOLENOID VALVE CIRCUIT(S) IN ABSCM & H/U
CODE 41ABNORMAL ABS CONTROL MODULE
CODE 42SOURCE VOLTAGE IS ABNORMAL
CODE 44A COMBINATION OF AT CONTROL ABNORMAL
CODE 51ABNORMAL VALVE RELAY
CODE 52ABNORMAL MOTOR AND/OR MOTOR RELAY
CODE 54ABNORMAL STOP LIGHT SWITCH
CODE 56ABNORMAL G SENSOR OUTPUT VOLTAGE

DIAGNOSTIC TROUBLE CODES (DTC) LIST