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.

CAUTION:
P/S control module cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to the P/S control module with connectors disconnected from the P/S control module.





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.

(Part 1):

(Part 2):

(Part 3):

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