Engine General Information and Diagnosis: 1A-40
2 4) Insert the needle pointed probes to the lead wire coupler.
5) Check the continuity between the P/B wire and R wire.
If the sound is not heard from the tester, the circuit
condition is OK.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity ( )
6) Disconnect the ECM coupler. Refer to “ECM Removal
and Installation in Section 1C (Page 1C-1)”.
7) Check the continuity between the P/B wire “B” and
terminal “8”. Also, check the continuity between the B/Br
wire “C” and terminal “29”.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity ( )
Is the continuity OK?
Go to Step 4. P/B wire shorted to Vcc,
or B/Br wire open.
Step Action Yes No
(A)
(B)
I718H1110170-02
“C”
?
“8”
“29”
(A)
(B)
“B”
I718H1110171-02
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