A02464
SST
ON
VAF
E2
(+)
(--)
--
DIAGNOSTICS
ENGINE (1RZ--E)
DI--71
4 Check voltage between terminals VAF and E2 of engine ECU connector.
PREPARATION:
(a)
Reconnect the variable resistor connector.
(b) Remove the glove compartment.
(c)
Turn the ignition switch ON.
CHECK:
Measure voltage between terminals VAF and E2 of engine ECU
connector while slowly turning the idle mixture adjusting screw
first fully counterclockwise, and then fully clockwise, using SST.
OK:
Voltage changes smoothly from 0 V to about 5 V;
i.e., does not suddenly jump up to 5 V or down to
0 V.
OK
Check and replace engine ECU.
NG
5 Check for open and short in harness and connector between variable resistor
and engine ECU
NG
Repair or replace harness or connector.
OK
Check and replace engine ECU.
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