1A-41 Engine General Information and Diagnosis:
17 (Use of FI indicator light)
Step Action Yes No
1 1) Turn off the ignition switch.
2) Remove the fuel tank. Refer to “Fuel Tank Removal and
Installation” in Section 1G (Page 1G-5).
3) Check the IAP sensor coupler (1) for loose or poor
contacts.
If OK, then measure the IAP sensor input voltage.
4) Disconnect the IAP sensor coupler.
5) Turn on the ignition switch.
6) Measure the voltage at the R/Bl wire “A” and ground.
If OK, then measure the input voltage between the R/Bl
wire “A” and B/Br wire “B”.
Special tool
(A): 09900–25008 (Multi circuit tester set)
(B): 09900–25009 (Needle-point probe set)
Tester knob indication
Voltage ( )
IAP sensor input voltage
4.5 – 5.5 V
((+) terminal: R/Bl – (–) terminal: Ground, (+)
terminal: R/Bl – (–) terminal: B/Br)
Is the voltage OK?
Go to Step 3. • Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the R/Bl wire or B/
Br wire.
1
IA02J1110033-01
V
(A)
(B)
“A”“B”
IA02J1110034-01
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