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ON-VEHICLE SERVICE TSB Revision ENGINE MECHANICAL 11A-9 IGNITION TIMING CHECK M1111001700566 Required Special Tool: • MB991824: V.C.I. • MB991827: MUT-III USB Cable • MB991911: MUT-III Main Harness B 1. Before checks, set the vehicle in the following condition: • Engine coolant temperature: 80 − 95°C (176 − 203°F) • Lights and all accessories: OFF • Transmission: P range NOTE: Vehicles for Canada, the headlight, taillight, etc. CAUTION To prevent damage to scan tool MB991958, always turn the Standard value: 5 ° BTDC ± 3° 8. If the basic ignition timing is not within the standard value, check the following items: • Diagnostic output • Timing belt cover and crankshaft position sensor installation conditions • Crankshaft sensing blade condition CAUTION If the actuator test is not canceled, the forced drive will drive stop mode), and cancel the actuator test. 10.Check that the actual ignition timing is at the standard value. Standard value: Approximately 10 ° BTDC NOTE: Ignition timing fluctuates about ± 7 ° Before Top Dead Center, even under normal operating condition. ° to 15 ° Before Top Dead Center at higher altitudes. AK303629AB MB991911 MB991827 MB991824 16-PIN |