TOHATSU 200 Series Service Manual page 88

dummyhead dummyhead
FUEL SYSTEM
MIL ON BUT DOES NOT BLINK OR
INDICATE DTC CODE
1. DLC short circuit inspection
Turn the combination switch OFF.
Disconnect the dummy connector from the DLC
Check for continuity between the DLC
(Light green) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
2. MIL ON line short circuit inspection
Turn the combination switch OFF.
Disconnect the ECM connector A
Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES
NO
3. MAP sensor power line short circuit inspection 1
Turn the combination switch OFF.
Connect
disconnect the MAP sensor 3P connector
Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES
NO
4. MAP sensor power line short circuit inspection 2
Measure the voltage between the MAP sensor 3P
connector
(Brown/Yellow) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
5-32
.
– GO TO STEP 2.
– Repair short in the main wire harness
between the ECM and the DLC.
– GO TO STEP 3.
– Repair short in the main wire harness
between the ECM and the MIL.
the ECM connector
– Replace the MAP sensor.
– GO TO STEP 4.
main wire harness side No.1
– GO TO STEP 5.
– Repair short in the main wire harness
between the ECM and the MAP sensor.
No.4
SCS
(Light green)
.
A and
.
MAP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
DLC
VCC1
(Brown/Yellow)