Engine General Information and Diagnosis: 1A-73
Step Action Yes No
1 8) Check the continuity between the R wire and terminal
“7”. Also, then check the continuity between B wire and
terminal “31”.
Special tool
(A): 09900–25008 (Multi circuit tester set)
(B): 09900–25009 (Needle-point probe set)
Tester knob indication
Continuity test ( )
ECM coupler (Harness side)
Is the continuity OK?
Go to Step 2. R or B wire open, or B
wire shorted to ground.
(Black)
(Gray)
?
(A)
(B)
“7”
“31”
I837H1110053-01
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