Ignition Timing: PRIUS
WARNING:
Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
NOTE:
Master warning light may also be referred to as hybrid system error warning light.
- Connect timing light lead to cylinder No. 1. Cylinder No. 1 is front cylinder at timing chain end of engine. On this model, the engine is shut off when engine is at normal operating temperature and battery is fully charged and A/C is not turned on. It is necessary to put transit in inspection mode so engine will run continuously when checking ignition timing. To put transit in inspection mode, perform the following steps within 60 seconds:
- Ensure ignition is off and then turn ignition on.
- Ensure transaxle is in Park and then fully depress accelerator pedal 2 times.
- Place transaxle in Neutral and then fully depress accelerator pedal 2 times.
- Place transaxle back in Park and then fully depress accelerator pedal 2 times.
- Check that master warning light on instrument cluster at center of instrument panel is flashing to indicate inspection mode operation. See Fig 1. Turn ignition switch to START position to start engine. Engine will now start and run continuously. Warm engine to normal operating temperature.
- Ensure transaxle is in Park. Note location of data link connector No. 3 at driver's side of instrument panel. See Fig 2. Install Jumper Wire (SST 09843-18020) between terminals No. 4 (CG) and 13 (TC) on data link connector No. 3. See Figure.
- Check ignition timing with engine idling. Timing marks are located on timing chain cover, near crankshaft pulley. Ensure base timing is within specification at idle with transaxle in Park and with A/C and all accessories off. See IGNITION TIMING SPECIFICATIONS table. Shut engine off. Remove jumper wire and timing light.