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Abs Light Diagnostics

  1. Ensure battery voltage is at least 12 volts. Turn ignition on. ABS light should illuminate and then go out after 3 seconds. If warning light does not illuminate, check fuse, bulb and wiring harness.
  2. With ignition on, disconnect short pin from Data Link Connector No. 1 (DLC1). See Fig 1. DLC1 is located in engine compartment. Using a jumper wire, connect terminals Tc and E1 of Data Link Connector No. 1 (DLC1) or Data Link Connector No. 2 (DLC2). See Figure or Figure . DLC2 is located under left side of instrument panel, near kick panel.
  3. If a malfunction is detected, ABS light will begin to flash a 2-digit Diagnostic Trouble Code (DTC) after 4 seconds. ABS light will flash first digit, followed by a 1.5-second pause and then second digit.
  4. Count number of flashes to obtain digits of 2-digit code. If 2 or more codes are stored, a 2.5-second pause will separate codes. See DIAGNOSTIC TROUBLE CODES table for code diagnosis. See appropriate chart under DIAGNOSTIC CHARTS.
  5. If ABS is functioning properly, 2 seconds will elapse, and then ABS light will blink once every .25 second.
  6. After replacing or repairing malfunctioning components, clear diagnostic trouble codes. If battery cable was disconnected during repairs, all codes will be erased. If battery cable was not disconnected during repairs, see CLEARING CODES under DIAGNOSIS & TESTING.
DIAGNOSTIC TROUBLE CODES

Code Diagnosis
11 Open Or Short In ABS Solenoid Relay Circuit
12 B+ Short In ABS Solenoid Relay Circuit
13 Open Or Short In ABS Motor Relay Circuit
14 B+ Short In ABS Motor Relay Circuit
15 (1) Open Or Short In TRAC Solenoid Relay Circuit
16 (1) B+ Short In TRAC Solenoid Relay Circuit
17 (1) Open Or Short In TRAC Motor Relay Circuit
18 (1) B+ Short In TRAC Motor Relay Circuit
21 Open Or Short In ABS Actuator Solenoid SFR Circuit
22 Open Or Short In ABS Actuator Solenoid SFL Circuit
23 Open Or Short In ABS Actuator Solenoid SRR Circuit
24 (1) Open Or Short In ABS Actuator Solenoid SRL Circuit
25 (1) Open Or Short In TRAC Actuator Solenoid SMC Circuit
26 (1) Open Or Short In TRAC Actuator Solenoid SAC Circuit
27 (1) Open Or Short In TRAC Actuator Solenoid SRC Circuit
31 Right Front Wheel Speed Sensor Signal Malfunction
32 Left Front Wheel Speed Sensor Signal Malfunction
33 Right Rear Wheel Speed Sensor Signal Malfunction
34 Left Rear Wheel Speed Sensor Signal Malfunction
35 Open In Left Front Or Right Rear Speed Sensor Circuit
36 Open In Right Front Or Left Rear Speed Sensor Circuit
41 Low Or High Battery Voltage
51 ABS Pump Motor Locked Or Open In ABS Pump Motor Ground
53 (1) TRAC Pump Motor Long Time Energizing
54 (1) TRAC Pump Motor Operation Frequency Excessive
55 (1) Brake Fluid Reservoir Level Low
56 (1) Open Or Short In Pressure Sensor Circuit
57 (1) Pressure Sensor Malfunction
61 (1) TRAC ECU Communication Abnormal
62 (1) Wheel Speed Sensor Signal Malfunction
Always On Malfunction In ABS ECU
(1) This code applies to vehicles equipped with TRAC.
Fig 1: Locating Short Pin
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