TOHATSU BFT75A Service Manual page 169

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FUEL SYSTEM
3. TP sensor signal line short circuit inspection
Turn the combination switch OFF.
Disconnect ECM connector A
Check for continuity between the TP sensor 3P
connector
Black) terminal and engine ground.
Is there continuity?
YES
NO
DTC 7-2 (TP SENSOR VOLTAGE IS TOO HIGH)
• When the DTC code 6-2, 7-2, 10-2, 22-2, 140-2, and
141-2 are indicated at the same time, the ground line
(SG2) is open.
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the TP sensor 3P connector
ECM connector A
and joint connector 2
them.
Clear the DTC (page 5-5).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the TP sensor voltage using the Dr.H.
Is the measurement within 0.23 – 4.89 V?
YES
NO
2. TP sensor inspection
Turn the combination switch ON and measure the
TP sensor voltage using the Dr.H.
Is the measurement within 4.49 – 4.85 V when
the throttle is fully open and within 0.44 – 0.56 V
when the throttle is fully closed?
YES
NO
5-28
main wire harness side No.2 (Red/
– Repair short in the Red/Black wire.
– Replace the throttle body with a new one
and recheck.
, ECM connector B
, and then reconnect
– Temporary failure (code
reappear)
– GO TO STEP 2.
– Replace the ECM with a new one and
recheck.
– Repair the open circuit in the Green wire. If
the main wire harness is normal, replace
the throttle body with a new one and
recheck.
.
,
,
does not