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.
1995 Suzuki Esteem GLX, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Identification
- Code Charts
- Chart A-1 - ECM Power & Ground CKT Check Mil "Check Engine" Inoperative, Engine Cranks But Does Not Start
- Chart A-2 - Mil "Check Engine" Circuit Check Mil "Check Engine" Inoperative, Engine Starts
- Chart A-3 - Mil "Check Engine" Circuit Check Mil "Check Engine" Stays On - Won't Flash
- Code 13 - Heated Oxygen Sensor Circuit
- Code 14 - Engine Coolant Temperature (ECT) Sensor Circuit Low Temperature Indicated, Signal Voltage High
- Code 15 - Engine Coolant Temperature (ECT) Sensor Circuit High Temperature Indicated, Signal Voltage Low
- Code 21 - Throttle Position (TP) Sensor Circuit Signal Voltage High
- Code 22 - Throttle Position (TP) Sensor Circuit Signal Voltage Low
- Code 23 - Intake Air Temperature (IAT) Sensor Circuit Low Temperature Indicated, Signal Voltage High
- Code 24 - Vehicle Speed Sensor Circuit
- Code 25 - Intake Air Temperature (IAT) Sensor Circuit High Temperature Indicated, Signal Voltage Low
- Code 31 - Map Sensor Circuit Signal Voltage Low
- Code 32 - Map Sensor Circuit Signal Voltage High
- Code 41 - Ignition Fail Safe Signal CKT - No Ignition Signal
- Code 42 - Camshaft Position (CMP) Sensor Circuit No Signal For 2 Seconds During Engine Starting
- Code 51 - EGR System Faulty EGR System
- Code 52 - Fuel System Air/Fuel Ratio Feedback Incorrect
- Final Check
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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