Engine General Information and Diagnosis: 1A-35
C13 (Use of mode select switch)
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. Refer to “Fuel Tank
Removal and Installation in Section 1G (Page 1G-10)”.
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 the ignition switch ON.
6) Measure the input voltage between the R wire and
ground.
If OK, then measure the voltage between the R wire and
B/Br wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
IAP sensor input voltage
4.5 – 5.5 V
((+) terminal: R – (–) terminal: Ground, (+) terminal: R
– (–) terminal: B/Br)
Is the voltage OK?
Go to Step 2. • Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the R or B/Br wire.
1
I823H1110113-01
(A)
V
I823H1110016-05
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