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Diagnostic Test Mode 2: System Sensor Signal Test. This tests whether signals are received from certain sensors and switches. If they are, then a code flashes so indicating it.
For vehicles equipped with air conditioning, turn the a/c control to "on."
Turn the ignition ON to KPII and install the cable into socket 6 for ignition-related tests.
Press the button two times for >1 and <3 seconds each. The LED lamp should flash rapidly. (If nothing flashes, see No Code.)
Check the throttle position switch by turning the throttle pivot wheel slightly from within the engine compartment. The LED should go out and then flash code 3-3-4 which indicates proper operation of the TPS.
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