I
• I
PGM-FI SYSTEM
4-26
DTC 9-2 (IAT SENSOR HIGH
VOLTAGE)
Before starting the inspection, check for loose or
poor contact on the sensor unit 5P (Black) connector
and recheck the OTC.
1. IA
T
Sensor System Inspection
Turn the ignition switch ON and engine stop switch
"0".
Check the IA T sensor with the MCS tester.
Is about 5 Vindicated?
YES -
GO TO STEP
2.
NO - •
Intermittent failure
• Loose
or
poor contact on the sensor
unit 5P (Black) connector
2. IAT Sensor Output Voltage Inspection
Turn the ignition switch OFF.
Disconnect the sensor unit 5P (Black) connector.
Connect the sensor unit 5P (Black) connector [1]
terminals
of
the wire harness side with a jumper wire
[2].
CONNECTION: White/blue - Green/orange
Turn the ignition switch ON.
Check the IAT sensor with the MCS tester.
Is about O Vindicated?
YES -
Replace the sensor unit with a new one
and recheck (Faulty IAT sensor).
NO -
GO TO STEP
3.
3. IAT Sensor Output Line Open Circuit Inspection
Turn the ignition switch OFF.
Disconnect the jumper wire.
Disconnect the ECM
21
P (Gray) connector.
Check for continuity between the sensor unit 5P
(Black) connector [1]
of
the wire harness side and
ECM
21
P (Gray) connector [2]
of
the wire harness
side.
CONNECTION: White/blue -
812
(White/blue)
STANDARD: Continuity
TOOL:
Test probe, 2 pack 07ZAJ -RDJA 110
Is there continuity?
YES -
GO TO STEP 4.
NO -
Open circuit
in
the White/blue wire
White/
blue
I
[2]
White/blue
[1]
Green/
orange
[2]
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