Page text (OCR transcript)
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)
