Steering Control Module: Testing and Inspection
Power Steering ECU1. JACK UP VEHICLE AND SUPPORT IT ON STANDS
2. REMOVE INSTRUMENT PANEL NO.1 UNDER COVER
HINT: Do not disconnect the ECU connector.
3. START ENGINE
4. MEASURE VOLTAGE OF ECU
(a) Using a voltmeter, measure the voltage between ECU terminals SOL (-) and GND while the engine is idling.
Standard voltage: 0.32-0.44 V
(b) Place the transmission in gear and while running at about 60 km/h (37 mph), measure the voltage between ECU terminals SOL (-) and GND.
Standard voltage:
Voltage measured in (a) above, minus 0.04-0.18 V
If no voltage, try another ECU.
5. INSTALL INSTRUMENT PANEL NO.1 UNDER COVER
6. LOWER VEHICLE