A02443
Hand--Held Tester
Check Connector
DI--14
--
DIAGNOSTICS
ENGINE (1RZ--E)
7 . Re fe re nc e Va l ue of E ngi ne E CU Da ta
HINT:
Engine ECU data can be monitored by hand--held tester.
(a)
Hook up the hand--held tester to the check connector.
(b)
Monitor ECU data by following the prompts on the tester
screen.
Please refer to the hand--held tester operator’s manual
for further detail.
(c)
Reference Value
Item
Inspection Condition
Reference Value
INJECTOR
Engine cold to hot
Engine idling at normal operating temp.
*1
Gradually decreases
Approx. 3 -- 4 msecs
IGNITION
Increase engine speed
Gradually increases
ENGINE SPEED
RPM kept stable (Comparison with tachometer)
No great changes
INTAKE MAN.
Engine idling at normal operating temp.
*1
Increase engine load
Approx. 160 -- 350
Gradually increases
COOLANT TEMP.
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/F L
Engine idling at normal operating temp.
2.50
±
0.7 V
*
3
A/F FB LEFT
RPM stable at 2,500 rpm with normal operating temp.
ON
STA SIGNAL
During cranking
ON
IDL SIGNAL
Closed throttle position
ON
A/C SIGNAL
A/C switch ON
ON
*1: All accessories and A/C are switched OFF.
*2: If the water temp. sensor circuit is open or shorted, the engine ECU assumes an engine coolant temp.
value of 80
˚
C (176
˚
F).
*3: When feedback control is forbidden, 0 V is displayed.
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Pages From Supplement
3RZ-F,3RZ-FE
