4-48 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P0115-H:)
1) Turn the ignition switch to OFF.
2) Check the ECT sensor coupler for loose or poor contacts.
If OK, then check the ECT sensor lead wire continuity.
3) Disconnect the ECT sensor coupler and ECM coupler.
4) Check the continuity between B/Bl wire
A
and terminal
0
.
5) Also, check the continuity between B/Br wire
B
and terminal
S
.
ECTS 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?
6) After repairing the trouble, clear the DTC using SDS tool.
(
4-26)
1
YES
Go to Step 2.
NO
B/Bl or B/Br wire open
1
]
ECM couplers (Harness side)