Ignition Timing Control Inspection
- Start the engine and run it at idle.
- Warm up the engine to normal operating temperature.
- Connect the M-MDS to the DLC-2.
- Select the PID/DATA MONITOR AND RECORD function on the M-MDS display.
- Select the SPARKADV PID.
- Verify that SPARKADV PID is within the specification.
Specification
Approx. BTDC 10°
- Increase the engine speed and verify that the SPARKADV PID value is advanced.
- If it is not advanced, inspect the following:
- CKP sensor and related harness (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION ).
- MAF sensor and related harness (See MASS AIR FLOW (MAF) SENSOR INSPECTION ).
- CMP sensors (left and right bank) and related harness (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION ).
- If it is not advanced, inspect the following: