
62
FI
FUEL INJECTION SYSTEM
Fault code No.
25
Symptom
Intake air pressure sensor 2 (cylinder #1): open or short circuit detected.
Diagnostic code No. d:04 (intake air pressure sensor 2 (cylinder #1))
Order
Item/components and probable cause
Check or maintenance job
Reinstatement
method
1
Connections
• Intake air pressure sensor 2 (cylinder #1)
coupler
• Wire harness ECU coupler
Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely.
Setting the
engine stop
switch to “RUN”
and turning the
main switch on.
2
Open or short circuit in wire harness.
Repair or replace if there is an open or short cir-
cuit.
Between the intake air pressure sensor 2 (cylin-
der #1) coupler and ECU coupler.
Black/Blue – Black/Blue
Pink/Black – Pink/Black
Blue – Blue
3
Defective intake air pressure sensor 2
(cylinder #1).
Execute the diagnostic mode (code No. d:04).
Replace if defective.
1. Connect the pocket tester (DC 20 V) to the
intake air pressure sensor 2 (cylinder #1) cou-
pler terminals as shown.
2. Turn the main switch on.
3. Measure the intake air pressure sensor 2 (cyl-
inder #1) output voltage.
4. Is the intake air pressure sensor 2 (cylinder
#1) OK?
Positive tester probe
→
Pink/Black
1
Negative tester probe
→
Black/Blue
2
L
P/B
B/L
2
1
Intake air pressure sensor 2 (cylin-
der #1) output voltage:
3.75 ~ 4.25 V
Содержание RST90GTY
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