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4-54 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P0110-H:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (5-3)
3) Check the IAT sensor coupler for loose or poor contacts.
If OK, then check the IAT sensor lead wire continuity.
4) Disconnect the IAT sensor coupler and ECM coupler.
5) Check the continuity between Dg wire A and terminal Q.
6) Also, check the continuity between B/Br wire B and terminal
S.
IATS lead wire continuity:
Continuity ()
09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
Tester knob indication: Continuity test ()
Is the continuity OK?
7) After repairing the trouble, clear the DTC using SDS tool.
(4-27)
1
When using the multi-circuit tester, do not storongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
YES Go to Step 2.
NO Dg wire or B/Br wire open
1
!
(Black)
(Gray)
ECM couplers (Harness side)