SR–50 STEERING – ELECTRONIC CONTROL SYSTEM PPS ECU INSPECTION Register No.4 Duct Register No.5 Duct PPS ECU Instrument Panel Box R11308 GND SOL ⊖ R07587 1. JACK UP VEHICLE AND SUPPORT IT ON STANDS 2. START ENGINE 3. MEASURE VOLTAGE OF ECU (a) Using a voltmeter, measure the voltage between ECU terminals SOL ⊖ and GND while the engine is idling. Standard voltage: 0.15–0.20 V 37 mph (60km/h) GND SOL ⊖ R07588 (b) Place the transmission in gear and while running at about 37 mph (60 km/h), measure the voltage between ECU terminals SOL ⊖ and GND. Standard voltage: Voltage measured in (a) above, minus 2JZ–GE: 0.02–0.08 V 2JZ–GTE: 0.01–0.07 V If no voltage, try another ECU. 4. LOWER VEHICLE