Grand Vitara & XL-7
- Engine overheating. See engine overheating related DTCs in appropriate SELF-DIAGNOSTICS article.
- Faulty spark plugs. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article.
- Improper ignition timing. Check ignition timing. See IGNITION TIMING in ON-VEHICLE ADJUSTMENTS article.
- Fuel system malfunction. See FUEL SYSTEM in SYSTEM & COMPONENT TESTING article.
- Exhaust Gas Recirculation (EGR) system malfunction. See EGR valve related DTCs in appropriate SELF-DIAGNOSTICS article.
- Faulty Engine Coolant Temperature (ECT) sensor. See ECT sensor related DTCs in appropriate SELF-DIAGNOSTICS article.
- Faulty fuel injector(s). See B-2: FUEL INJECTOR CIRCUIT INSPECTION under CIRCUIT TESTS in BASIC DIAGNOSTIC PROCEDURES article.
- Engine Control Module (ECM) malfunction. See A3: ENGINE CONTROL MODULE POWER & GROUND CIRCUIT CHECK/ENGINE DOES NOT START under SYSTEMS TEST in appropriate SELF-DIAGNOSTICS article.
- Excessive carbon deposits in combustion chambers. Clean combustion chambers as necessary.