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1992 - 1996 Corvette: ABS/ASR Fault Codes and Parameters

Source:  Corvette ABS/ASR Operation and Diagnosis, STG Manual 13003.02-1
Page:  4-5, 4-6
Copyright: 1991, General Motors Corporation

Code-Based Diagnosis

 

CodeDescriptionDisable
21 RF Wheel Speed Sensor Fault ABS/ASR
23 RF Wheel Speed Sensor Continuity Fault ABS/ASR
25 LF Wheel Speed Sensor Fault ABS/ASR
27 LF Wheel Speed Sensor Continuity Fault ABS/ASR
28 Wheel Speed Sensor Frequency Error ABS/ASR
31 RR Wheel Speed Sensor Fault ABS/ASR
23 RR Wheel Speed Sensor Continuity Fault ABS/ASR
35 LR Wheel Speed Sensor Fault ABS/ASR
37 RF Wheel Speed Sensor Continuity Fault ABS/ASR
41 RF Value Solenoid Fault ABS/ASR
44 Pilot Valve Solenoid Fault ABS/ASR
45 LF Valve Solenoid Fault ABS/ASR
51 RR Valve Solenoid Fault ABS/ASR
55 LR Valve Solenoid Fault ABS/ASR
57 Cruise Control Ootput Monitoring Fault ASR
58 EBCM Internal Adjuster Assembly Fault ASR
61 Pump Motor or Pump Motor Relay Fault ABS/ASR
62 Tach Pulses Fault ASR
63 Valve Solenoid Relay Circuit Fault ABS/ASR
64 Throttle Position Signal Fault ASR
65 Adjuster Assembly Fault ASR
66 Adjuster Assembly Control Fault ASR
71 EBCM Internal Fault ABS/ASR
72 Serial Data Link Fault ASR
73 Spark Retard Monitoring Fault ASR
74 Low Voltage ABS/ASR
75 Lateral Accelerometer Wiring Fault ABS/ASR
76 Lateral Accelerometer Signal Out of Range ASR
83 Brake Fluid Level Low ABS/ASR



*EBCM:  Electronic Brake Control Module

ABS/ASR Fault Code Parameters

 

DesriptionCode Number(s)Parameters
Speed Sensor Faults 21, 25, 31, 35 Circuit or sensor problem with ignition "ON" and vehicle in motion.
Speed Sensor Frequency Fault 28 Error as above, but individual sensor or circuit not identified.
Speed Sensor Continuity Faults 23, 27, 33, 37 Circuit or sensor problem with ignition "ON" and vehicle at rest.
Valve Solenoid Faults 41, 45, 51, 55 Solenoid position not as commanded.
Pilot Valve Solenoid Faults 44 Solenoid position not as commanded.
Cruise Control Output Monitoring Fault 57 Cruise control cutoff relay not as commanded.
EBCM Internal Adjuster Assembly Fault 58 Loss of microprocessor communication inside EBCM.
Pump Motor or Pump Motor Relay Fault 61 Voltage at relay without EBCM command or voltage not at relay within 60 milliseconds of command..
Tach Pulses Fault 62 Engine RPM input lost.
Valve Solenoid Relay Circuit Fault 63 Voltage at relay not correct as commanded.
Throttle Position Signal Fault 64 TPS signal not present or out of range.
Adjuster Assembly Fault 65 Circuits to motor open or shorted.
Adjuster Assembly Control Fault 66 Current at motor too high (over 16 amps for 3 seconds) before reaching commanded position.
EBCM Internal Fault 71 Internal problem detected in self-testing.
Serial Data Link Fault 72 3 consecutive data link transmission errors.
Spark Retard Monitoring Fault 73 Open or short in ignition retard request circuit to ECM.
Low Voltage 74 EBCM power input below 9.0 volts.
Lateral Accelerometer Wiring Fault 75 Open or short on any of the lateral accelerometer circuits.
Lateral Accelerometer signal Out of Range 76 Rating greater than 0.6g for an extended period of time.
Brake Fluid Level Low 83 Fluid level sensor or circuit indicates low fluid.
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