1A-55 Engine General Information and Diagnosis:
NOTE
• After repairing the trouble, clear the DTC using SDS tool. Refer to “Use of SDS Diagnosis Reset
Procedures (Page 1A-15)”.
• IAP sensor #2 is incorporated in the TP sensor/IAT sensor.
C17 (Use of mode select switch)
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Check the IAP sensor coupler for loose or poor contacts.
If OK, then measure the IAP sensor input voltage.
3) Disconnect the IAP sensor coupler.
4) Turn the ignition switch ON.
5) Insert the needle pointed probes to the lead wire coupler.
6) Measure the voltage at the R wire and ground.
If OK, then measure the voltage at the R wire and B/Br
wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Voltage ( )
IAP sensor #2 input voltage
4.5 – 5.5 V
((+) terminal: R – (–) terminal: Ground, (+) terminal: R
– (–) terminal: B/Br)
Is the voltage OK?
Go to Step 4. • Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the R or B/Br wire.
I717H1110013-02
(A)
(B)
I718H1110180-03
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