Federal

CIRCUIT DIAGRAM








INSPECTION USING SCAN TOOL











HARNESS INSPECTION PROCEDURE

USING OSCILLOSCOPE
1. Run the engine at an idle speed.





2. Connect the probe to the oscilloscope pick-up point as shown in the circuit diagram. and check the waveform.

TROUBLESHOOTING HINTS
- If an impact is suddenly felt during driving or the engine suddenly stalls during idling, try shaking the crankshaft position sensor during idling. If the engine stalls, the cause may be presumed to be improper or incomplete contact of the crankshaft position sensor 's connector.
- If the crankshaft position sensor output rpm is 0 rpm during cranking when the engine cannot be started, the cause may be presumed to be a malfunction of the crankshaft position sensor or a broken timing belt.
- If the indicated value of the crankshaft position sensor output rpm is 0 rpm during cranking when the engine cannot be started, the cause may be presumed to be a failure of the ignition coil's primary current to intermittently pulse correctly, so a malfunction of the ignition system circuitry, the ignition coil and/or the ignition power transistor is the probable cause.