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.
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HOMESERVICE MANUALSSUZUKI1999ESTEEM GLX SEDAN L4-1.6LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONINITIAL INSPECTION AND DIAGNOSTIC OVERVIEWDESCRIPTION OF ON-BOARD DIAGNOSTICSON-BOARD DIAGNOSTIC SYSTEM
1999 Suzuki Esteem GLX Sedan L4-1.6L
On-Board Diagnostic System
1999 Suzuki Esteem GLX Sedan L4-1.6LSECTION On-Board Diagnostic System
On-board diagnostic system (Self-diagnosis function)
ECM performs on-board diagnosis on the system and parts that influence the vehicle emission in compliance with OBD-II regulation. Refer to Engine General Information and Diagnosis.
ECM and malfunction indicator lamp ("CHECK ENGINE" light) operate as follows.
- Malfunction indicator lamp lights when the ignition switch is turned ON (but the engine at stop) regardless of the condition of Engine & emission control system (Electronic Fuel Injection system). This is only to check the malfunction indicator lamp bulb and its circuit.
- If the system and parts that influence the vehicle emission is free from any malfunction after the engine start (while engine is running), malfunction indicator lamp turns OFF.
- When ECM detects a malfunction, it makes malfunction indicator lamp turn ON or flashing while the engine is running to warn the driver of such occurrence of trouble and at the same time it stores the applicable diagnostic trouble codes in ECM memory.
ECM performs on-board diagnosis on the system and parts that influence the vehicle emission in compliance with OBD-II regulation. Refer to Engine General Information and Diagnosis.
ECM and malfunction indicator lamp ("CHECK ENGINE" light) operate as follows.
- Malfunction indicator lamp lights when the ignition switch is turned ON (but the engine at stop) regardless of the condition of Engine & emission control system (Electronic Fuel Injection system). This is only to check the malfunction indicator lamp bulb and its circuit.
- If the system and parts that influence the vehicle emission is free from any malfunction after the engine start (while engine is running), malfunction indicator lamp turns OFF.
- When ECM detects a malfunction, it makes malfunction indicator lamp turn ON or flashing while the engine is running to warn the driver of such occurrence of trouble and at the same time it stores the applicable diagnostic trouble codes in ECM memory.
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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.