Engine General Information and Diagnosis: 1A-108
4 1) Disconnect the ECM coupler. Refer to “ECM Removal
and Installation in Section 1C (Page 1C-1)”.
2) Insert the needle pointed probes to the lead wire coupler.
3) Check there is continuity between the G/R wire “A” and
ECM terminal “39”.
Also the B wire “B” and cooling fan motor B wire “C”.
Special tool
(A): 09900–25008 (Multi circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity ( )
Is there continuity?
Replace the ECM with a
new one. Refer to “ECM
Removal and
Installation in Section
1C (Page 1C-1)”.
Open circuit in the G/W
wire or B wire.
Step Action Yes No
“36”
(A)
“A”
(B)
(B)
I944H1110185-01
(A)
“C”
“B”
I944H1110186-01
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