1A-81 Engine General Information and Diagnosis:
P1654-L (Use of SDS)
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Remove the air cleaner box. Refer to “Air Cleaner Box
Removal and Installation in Section 1D (Page 1D-6)”.
3) Check the STP sensor coupler (1) for loose or poor
contacts.
If OK, then check the STP sensor lead wire continuity.
4) Disconnect the STP sensor coupler and ECM coupler.
Refer to “ECM Removal and Installation in Section 1C
(Page 1C-1)”.
5) Check there is no continuity between the R wire “A” and
ground.
Also the R wire “A” and another wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Continuity ( )
Is there no continuity?
Go to Step 2. Short circuit in the R
wire.
1
I944H1110065-01
“A”
(A)
I944H1110143-01
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