TOHATSU 200 Series Service Manual page 96

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FUEL SYSTEM
MIL BLINKS 10 TIMES (ONE LONG
BLINK AND NO SHORT BLINKS) IAT
SENSOR
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the IAT sensor 2P connector
ECM connector A
joint connector 1
Reset the ECM (page 5-2).
Turn the combination switch OFF and connect the
SCS service check connector.
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 10 times?
YES
NO
2. IAT sensor signal/GND line open/short circuit
inspection
Turn the combination switch OFF and disconnect
the IAT sensor 2P connector
Turn the combination switch ON.
Measure the voltage between the IAT sensor 2P
connector
Yellow) terminal and No.2 (Green) terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
5-40
, ECM connector B
and then reconnect them.
– GO TO STEP 2.
– Temporary failure (code
reappear).
main wire harness side No.1 (Red/
– Replace the IAT sensor with a new one
and recheck.
– Repair open or short in the Red/Yellow or
Green wire harness between the ECM and
IAT sensor. If the main wire harness is
correct, replace the ECM with a new one
and recheck.
,
,
does not
.
IAT SENSOR 2P CONNECTOR
MAIN WIRE HARNESS SIDE
SG2
TA
(Green)
(Red/Yellow)