-5. Check for continuity between the No. 4 (Yellow/ Black)
terminal and the No. 6 (Red/Blue) terminal of the MIL
6P connector.
Is there the continuity?
YES –
Substitute a known-good ECM and recheck.
NO –
The MIL is faulty or repair open in the MIL har-
ness.
5-24
BF135A•BF150A
3. MIL line check
-1. Turn the ignition switch OFF and disconnect the MIL
6P connector.
-2. Turn the ignition switch ON. Measure the voltage
between the No. 2 (Yellow/Red) terminal of the MIL 6P
main harness side connector and the engine ground.
Is there the battery voltage?
YES –
Go to the step 3.
NO –
Repair open in the main wire harness.
-3. Turn the ignition switch OFF and disconnect the ECM
connector B.
-4. Check for the continuity between the No. 25 (Red/Blue)
terminal of the ECM harness side connector B and the
No. 4 (Red/Blue) terminal of the MIL main harness side
6P connector.
Is there the continuity?
YES –
NO –
Repair open in the main harness.
MIL HARNESS SIDE 6P
CONNECTOR
VIEWED FROM THE
TERMINAL SIDE
MIL HARNESS SIDE
6P CONNECTOR
ECM CONNECTOR B
VIEWED FROM THE
TERMINAL SIDE
MIL 6P CONNECTOR
VIEWED FROM THE
TERMINAL SIDE
YELLOW/BLACK
RED/BLUE
YELLOW/RED
WHITE/BLACK