The ignition timing is controlled by the ECM. No adjustment is necessary or possible.
2.5L & 3.5L Engines
- Slide the wiring harness protector of ignition coil No.1 back (2) to reach the wires.
- Attach timing light to the ignition coil No.1 wires as shown in the figure.
- On 3.5L engine, ignition timing should be 18º ± 5° BTDC at idle. There is no adjustment.
- On 2.5L engine, ignition timing should be 15º ± 5° BTDC at idle. There is no adjustment.