REFERENCE VALUE OF ECM DATA HINT: ECM data can be monitored by TOYOTA hand–held tester. 1. Hook up the TOYOTA hand–held tester to DLC2. 2. Monitor ECM data by following the prompts on the tester screen. Please refer to the TOYOTA hand–held tester operator's manual for further details. REFERENCE VALUE Item | Inspection condition | Reference value INJECTOR | Engine cold to hot Engine idling at normal operating temp.*1 | Gradually decreases Approx. 2.0 msec. IGNITION | Increase engine speed | Gradually increases IAC STEP # | Engine idling at normal operating temp.*1 A/C switch ON A/T shifting in "D" position Ignition switch ON (Engine off) | 20 ~ 25 steps Step increases Step increases Approx. 125 steps ENGINE SPEED | RPM kept stable (Comparison with tachometer) | No great changes VAF | Engine idling at normal operating temp.*1 Increase engine speed | Approx. 35 ms Gradually decreases ECT | Engine at normal operating temp. | 75–95°C (185–203°F)*2 THROTTLE | Closed throttle position Wide open throttle From closed throttle position to wide open throttle | Below 5° Above 70° Gradually increases VEHICLE SPD | During driving (Comparison with speedometer) | No large differences TARGET A/FL*5 | Engine idling at normal operating temp. | 2.50 ± 1.25 V*3 TARGET A/FR*6 | Engine idling at normal operating temp. | 2.50 ± 1.25 V*3 A/F FB LEFT*5 | RPM stable at 2500 rpm with normal operating temp. | ON A/F FB RIGHT*6 | RPM stable at 2500 rpm with normal operating temp. | ON KNOCK FB | Depress throttle pedal suddenly during idling | ON STA SIGNAL | During cranking | ON CTP SIGNAL | Closed throttle position | ON A/C SIGNAL | A/C switch ON | ON PNP SIGNAL*4 | When shifting from "P" or "N" position into a position other than "P" or "N" | GEAR O X L*5 | RPM stable at 2500 rpm with normal operating temp. | RICH LEAN is repeated O X R*6 | RPM stable at 2500 rpm with normal operating temp. | RICH LEAN is repeated *1: If the engine coolant temp. sensor circuit is open or shorted, the ECM assumes an engine coolant temp. value of 80°C (176°F). *2: When feedback control is forbidden, 0 V is displayed. *3: A/T only *4: Oxygen sensor (Front) *5: Oxygen sensor (Rear)