VITARA (2.0L), Grand VITARA (2.5L) & XL-7 (2.7L)
WARNING: This page is about a different car, the 2003 Suzuki XL-7, 2003 Suzuki Vitara, 2003 Suzuki Grand Vitara, and 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to LOCK position. Ensure transmission is in Neutral or Park. Set parking brake. Start engine and allow it to reach normal operating temperature. Turn all electrical loads off. Ensure idle speed is correct. See IDLE SPEED under IDLE SPEED & MIXTURE.
- Turn ignition switch to LOCK position. Connect Suzuki scan tool to Data Link Connector (DLC), located under left side of instrument panel. See Figure . Restart engine and let it idle. On scan tool, select MISC mode and fix ignition timing by selecting FIXED SPARK mode. Set timing light to No. 1 ignition coil harness. Aim timing light at timing marks and check ignition timing. See Fig 1 and Fig 2 . Ignition timing should be 4-6 degrees BTDC (at idle speed). If timing is not as specified, go to next step.
- Loosen Camshaft Position (CMP) sensor bolts and turn CMP sensor until timing marks line up. See Fig 3
and Fig 4
. With engine idling, end FIXED SPARK MODE. Using timing light verify that there is a constant variation in timing between 12-16 degrees, indicating proper operation of electronic timing system. Also, check that timing advances when increasing engine speed. If results are not satisfactory, check the following for proper operation:
- Throttle Position Sensor (TPS). See THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article.
- Test Switch Signal Circuit. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
- Engine Control Module (ECM). See ENGINE CONTROL MODULE under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article.