Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1989 Pontiac SafariFACTORY OEM SERVICE PROCEDURE
CCC V8 Carburetor Tests W/Codes
- Model Identification
- Self-Diagnostics
- Basic Diagnostic Procedure
- Entering Or Exiting Diagnostic Mode (Non-Scan)
- Reading Trouble Codes
- ECM Trouble Code Definitions
- Trouble Code Determination (Hard Or Intermittent)
- Clearing Trouble Codes
- Diagnostic Materials
- Special Tools (Diagnostic)
- Terminal Id & Pin Voltage Charts
- Diagnostic Circuit Check
- System Performance Check
- Chart A1 - Dwell Fixed Less Than 10 Degrees
- Chart A2 - Dwell Fixed Between 10°-50°
- Chart A3 - Dwell Fixed Greater Than 50 Degrees
- Chart A5 - No "Service Engine Soon" Light
- Chart A6 - "SES" Light On, Won't Flash Code 12
- Chart B1 - Restricted Exhaust System Check
- Code 12 - No Distributor Reference Pulses
- Code 13 - Open Oxygen Sensor Circuit
- Code 14 - Coolant Temp Sensor Signal Volt Low
- Code 15 - Coolant Temp Sensor Signal Voltage Hi
- Code 21 - TPS Signal Voltage High
- Code 22 - Throttle Position Sensor Signal Voltage Low
- Code 23 - M/C Solenoid Signal Voltage Low
- Code 24 - Vehicle Speed Sensor
- Chart 24B - Park/Neutral Circuit
- Code 31 - Canister Purge Solenoid Volt Signal Incorrect
- Code 34 - Pressure Sensor Signal Voltage Incorrect
- Code 41 - No Distributor Reference Signal
- Code 42 - Electronic Spark Timing
- Code 43 - Electronic Spark Control Signal Voltage Low
- Code 44 - Lean Exhaust Indication
- Code 45 - Rich Exhaust Indication
- Code 51 - Prom
- Code 53 - EGR System Malfunction (CALIF Only)
- Code 54 - M/C Solenoid Signal Voltage High
- Chart C1D - Pressure Sensor
- Chart C2C - Idle Load COMPENSATOR
- Chart C2D - Rear Vacuum Break
- Chart C2F - TPS Enrichment Check
- Chart C3 - Canister Purge Solenoid
- Chart C4A - Ignition System Check
- Chart C4K - Electronic Spark Timing Performance Check
- Chart C5 - Electronic Spark Control
- Chart C6A - Air Management Check
- Chart C7C - EGR Check
- Chart C8 - Torque Converter Clutch Elect Diagnosis
- Chart C9C - Vacuum Actuated EFE System Check (Non-CEC)
- Chart C10C - A/C Cut-Out Relay
- Wiring Diagrams
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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