Test A: The Engine Does Not Crank

PINPOINT TEST A: THE ENGINE DOES NOT CRANK

Normal Operation
Under normal operation, constant power is supplied to the starter motor relay on circuit SBB11 (BU/RD). When the ignition switch is turned in the START position and held, power is then supplied to the digital transmission range (TR) sensor (automatic transaxle) or clutch cutoff switch (manual transaxle) through circuit CE619 (BU/BN), with the vehicle in PARK or NEUTRAL or clutch pedal depressed power flows to the starter motor relay through CDC37 (GY/VT). A ground is supplied through circuit CDC12 (YE) from the PCM causing the starter motor relay coil to energize and the relay contacts close. This allows power to be supplied from the starter motor relay contacts which then flows through circuit CDC25 (BN/GN) to the starter solenoid. The solenoid is grounded at the starter motor. Energizing the starter solenoid will engage the starter drive into the ring gear and closes the solenoid contacts, allowing power directly from the battery through circuit SDC02 (RD) to the starter motor to start the engine.

This pinpoint test is intended to diagnose the following:
- Battery
- Anti-theft system
- Starter relay
- Ignition switch
- Circuitry
- TR sensor (automatic transaxle)
- Clutch cutoff switch (manual transaxle)
- PCM
- Start diode

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