1A-31 Engine General Information and Diagnosis:
When indicating C13 for IAP sensor (#2) / When indicating C17 for IAP sensor (#1) (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-7)”.
3) Check the IAP sensor couplers (#1 cylinder (1) or #2
cylinder (2)) for loose or poor contacts.
If OK, then measure the IAP sensor input voltage.
4) Disconnect the IAP sensor couplers.
5) Turn the ignition switch ON.
6) Measure the 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. Open circuit in the R or
B/Br wire.
1
2
I944H1110015-01
(A)
V
I823H1110016-05
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