Metro, Prizm 2000-2002

Timing Check

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  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Run the engine until it reaches normal operating temperature. Stop the engine, but keep the ignition switch in the ON position for approximately 5 seconds. Start the engine again.
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  5. Run the engine at 2000 RPM for approximately 5 minutes. After 5 minutes, allow it to run at idle speed.
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  7. Be sure all accessories are turned OFF .
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  9. Fully engage the parking brake.
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  11. Be sure the shift lever is placed in the NEUTRAL or PARK depending on transaxle type.
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  13. Connect a tachometer to the negative terminal of the ignition coil. Connect a timing light to the No. 1 spark plug wire. Check the engine idle speed and adjust, if needed.
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  15. Refer to the vehicle emission control information label (located under the hood) for ignition timing specifications.
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  17. When the ignition timing inspection is complete remove the timing light and tachometer.
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NOTE
If the ignition timing is out of specification, a possible engine electrical failure may have occurred. The following procedure may be used to inspect the timing:

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Warm the engine to normal operating temperature. Turn all electrical accessories OFF.
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  5. Connect a tachometer or engine scan tool and check the engine idle speed and be sure it is 650-750 rpm.
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  7. Connect a timing light. Remove the cap on the Data Link Connector (DLC). Using a fused jumper wire, connect terminals E1 and TE1 .
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  9. Start the engine and check timing. With the jumper wire connected, the timing should be at 10 degrees Before Top Dead Center (BTDC).
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  11. Remove the jumper wire from the DLC and reinstall the cap.
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  13. Shut the engine OFF and disconnect all test equipment.

    Click image to see an enlarged view

    Fig. DLC pin locations-Prizm models

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