Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Code Charts
- Notes
- Diagnostic Circuit Check
- Chart A-1, Won't Flash Code 12, No Check Engine Light
- Chart A-2, No ALDL Data Or Won't Flash Code 12, Check Engine Light On At All Times
- CODE 13, HEATED OXYGEN (O2) SENSOR CKT, OPEN CKT (GSi)
- CODE 13, NON-HEATED OXYGEN SENSOR CKT, OPEN CKT (EXCEPT GSi)
- Code 14, Coolant Temp Sensor (Cts) CKT High Temp Indicated
- Code 14, Coolant Temp Sensor (Cts) CKT, Low Temp Indicated
- Code 21, Throttle Position Sensor CKT, Signal Voltage High
- Code 21, Throttle Position Sensor CKT, Signal Voltage Low
- Code 23, Intake Air Temp (IAT) Sensor CKT, Low Temp Indicated
- Code 23, Intake Air Temp Sensor CKT, High Temp Indicated
- Code 24, Vehicle Speed Sensor (VSS) Circuit
- Code 32, EGR System Error (CALIF. Only)
- Code 33, Map Sensor Circuit, Signal Voltage High - Low Vacuum
- Code 33, Map Sensor Circuit, Signal Voltage Low - High Vacuum
- Code 42, Electronic Spark Timing (Est) Circuit
- CODE 44, HEATED O2 SENSOR CKT, LEAN EXHAUST INDICATED (GSi)
- CODE 44, NON-HEATED O2 SENSOR CKT, LEAN EXHAUST INDICATED (EXCEPT GSi)
- CODE 45, HEATED O2 SENSOR CKT, RICH EXHAUST INDICATED (GSi)
- CODE 45, NON-HEATED O2 SENSOR CKT, RICH EXHAUST INDICATED (EXCEPT GSi)
- Code 51, ECM Failure, ECM Failed Or Prom Failure