Continuous Monitor Diagnostic Mode (Wiggle Test)

For example, if in the Key-On/Engine-Off test a service code 09 was displayed, but the malfunction indicator light did not illuminate prior to activating the self-test, proceed as follows:
1. Visually inspect the sensor (in this case the engine coolant temperature sensor) very closely.
2. Enter the continuous monitor test.
3. Lightly tap on the sensor.
4. Push/pull on the sensor harness connector (do not disconnect).
5. Test and wiggle (shake) harness vigorously, working from the sensor connector toward the dash panel and from the dash panel to the processor in short sections.
6. If the volt/ohmmeter has not given a positive indication of an intermittent, disconnect the sensor from the harness as carefully as possible. Remove terminals from the connector. Visually inspect terminals at both ends for corrosion, bad crimps or improperly seated terminals.
7. Connect after inspection.
8. Disconnect processor from harness as carefully as possible.
9. Inspect terminals. Only remove terminals associated with the sensor being inspected.
10. If the volt/ohmmeter does not give a positive indication, connect electrical connector and erase the continuous test service codes.
11. To erase the continuous memory service codes, initiate Key-On/Engine-Off self-test. Unlatch the push button on the super star II tester as soon as the first service code is received. Disconnect negative battery ground cable and depress brake pedal for 5---10 seconds. Conduct self-test to verify service codes have been erased.