Engine General Information and Diagnosis: 1A-50
P0115-H (Use of SDS)
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Remove the throttle body. Refer to “Throttle Body
Removal and Installation in Section 1D (Page 1D-10)”.
3) Check the ECT sensor coupler (1) for loose or poor
contacts.
If OK, then check the ECT sensor lead wire continuity.
4) Disconnect the ECT sensor coupler and turn the ignition
switch ON.
5) Measure the input voltage between the B/Bl wire and
ground.
If OK, then measure the input voltage between the B/Bl
wire and B/Br wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
ECT sensor input voltage
4.5 – 5.5 V
((+) terminal: B/Bl – (–) terminal: Ground, (+)
terminal: B/Bl – (–) terminal: B/Br)
Is the voltage OK?
Go to Step 2. Open circuit in the B/Bl
or B/Br wire.
1
I944H1110032-01
(A)
I718H1110048-03
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