3. 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. If no code is flashed and the lamp keeps flashing, the TPS is faulty.
* After the tests, the LED should keep flashing.
* Remove the ignition coil center lead and crank the starter motor; the engine will not start but it will turn over. The LED should go out, then flash 1-4-1 for the RPM sensor. If no code is flashed and the lamp keeps flashing, the RPM sensor is faulty. Reinstall the coil lead and turn the ignition key ON to KPII.
* Install the cable into socket 2 for fuel injection-related tests.
* Press the button two times for >1 and <3 seconds each. The LED lamp should flash.
* Activate the following sensors. If the LED diagnostic code shown (note: this is not a fault code) is present then the sensor or component is OK:
o TPS OK in full load position (when throttle is moved from full load) 3-3-3
o TPS OK in idle position (when throttle is moved from idle) 3-3-2
o RPM sensor signal from ignition OK 3-3-1
o A/C control on/off OK (when a/c switch is depressed or released) 1-1-4
o A/C compressor start OK 1-3-4
o Engine idle speed compensation for automatic tran OK 1-2-4 (depress the brake pedal, move the selector to D and then to N.)
* Exit Mode 2 by switching off the ignition.