Inspection of P/S Control Module and Its Circuits

Inspection of P/S Control Module and Its Circuits

The P/S control module (1) and its circuits can be checked at the P/S control module wiring couplers (2) by measuring voltage and resistance.

NOTE:

If you connect a voltmeter or ohmmeter directly to the P/S control module by disconnecting the P/S control module connectors, you can damage the P/S control module.

Never connect a voltmeter or an ohmmeter directly to any terminal on the P/S control module by disconnecting the P/S control module connectors.





Voltage Check

1) Remove console box.
2) Check for voltage at each terminal with connectors connected to the P/S control module.

NOTE:
As each terminal voltage is affected by the battery voltage, confirm if the battery voltage is 11 V or more when ignition switch is ON.










Inspection of BCM and Its Circuits Pinout Values and Diagnostic Parameters









NOTE:

*: The voltage of this circuit may not be checked by voltmeter. If so, use oscilloscope.

Reference waveform No.1

Motor output signal 1 (1), Motor output signal 2 (2), with engine idling











Reference waveform No.2

Motor output signal 1 (1), Motor output signal 2 (2), with engine idling
















Reference waveform No.3

Motor output signal 1 (1), Motor output signal 2 (2), with engine idling