Testing - Preliminary Information
NOTE:
Testing individual components does not isolate shorts or opens. Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
- NEUTRAL START SWITCH CIRCUIT chart.
- ECU POWER SOURCE CIRCUIT chart.
- BACK-UP POWER SOURCE CIRCUIT chart.
- INJECTOR CIRCUIT chart.
- COLD START INJECTOR CIRCUIT chart.
- IDLE SPEED CONTROL (ISC) VALVE CIRCUIT chart.
- FUEL SYSTEM CIRCUIT chart.
- FUEL PRESSURE CONTROL VACUUM SWITCHING VALVE (VSV) CIRCUIT chart.
- TERMINAL TE1 & TE2 CIRCUIT DIAGNOSIS chart.
- A/C COMPRESSOR CIRCUIT chart.
Refer to the following transmission diagnostic charts:
- MAIN THROTTLE POSITION SENSOR CIRCUIT chart.
- NEUTRAL START SWITCH CIRCUIT chart.
- STOPLIGHT CIRCUIT chart.
- PATTERN SELECT SWITCH CIRCUIT chart.
- O/D SWITCH & O/D OFF INDICATOR LIGHT CIRCUIT chart.
- O/D CANCEL SIGNAL CIRCUIT chart.
- DIAGNOSIS CIRCUIT chart.
- CHECK CONNECTOR CIRCUIT chart.