BF135A•BF150A
5-62
3. IGP power supply line check
-1. Turn the ignition switch OFF and disconnect the PGM-
FI main relay 6P connector.
-2. Turn the ignition switch ON.
Measure the voltage
between the No. 2 (Black/Yellow) terminal of the PGM-
FI main relay harness side 6P connector and the
engine ground.
Is there the battery voltage?
YES –
NO –
Repair open in the main harness wire.
-3. Turn the ignition switch OFF. Check for the continuity
between the No. 6 (Black) terminal of the PGM-FI main
relay 6P connector and the engine ground.
Is there the continuity?
YES –
Perform “4. ECM power supply line check”.
NO –
Repair open in the main harness (Black) wire.
4. ECM power supply line check
-1. Turn the ignition switch OFF and disconnect the fuse
box 3P connector.
-2. Turn the ignition switch ON.
Measure the voltage
between the No. 3 (Yellow/Black) terminal of the fuse
box side 3P connector and the engine ground.
Is there the battery voltage?
YES –
Go to the step 3.
NO –
PGM-FI main relay is faulty, or fuse box is
faulty.
-3. Turn the ignition switch OFF and disconnect the ECM
connector C.
-4. Check for the continuity between the No.2
(Yellow/Black) terminal of the fuse box harness side 3P
connector and the respective terminals of the No. 1
(Yellow/Black) and the No. 5 (Yellow/Black) terminals of
the ECM connector C.
Is there the continuity?
YES –
Perform “5. MIL power supply line check”.
NO –
Repair open in the main harness wire.
PGM-FI MAIN RELAY
HARNESS SIDE 6P
CONNECTOR
VIEWED FROM THE TERMINAL SIDE
FUSE BOX SIDE 3P
CONNECTOR
VIEWED FROM THE TERMINAL SIDE
ECM CONNECTOR C
FUSE BOX HARNESS
SIDE 3P CONNECTOR
VIEWED FROM THE TERMINAL SIDE
BLACK/YELLOW
YELLOW/BLACK
YELLOW/BLACK
PGM-FI MAIN RELAY
HARNESS SIDE 6P
CONNECTOR
BLACK
VIEWED FROM THE TERMINAL SIDE