TOHATSU 200 Series Service Manual page 72

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FUEL SYSTEM
DTC 7-1, 7-2 (TP SENSOR VOLTAGE IS
TOO LOW OR TOO HIGH)
DTC 7-1 (TP SENSOR VOLTAGE IS TOO LOW)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the TP sensor 3P connector
ECM connector A
joint connector 1
Clear the DTC (page 5-2).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the TP sensor voltage using the HDS.
Is the measurement within 0.23 – 4.89 V?
YES
NO
2. TP sensor power/signal
inspection
Turn the combination switch OFF and disconnect
the TP sensor 3P connector
Turn the combination switch ON.
Measure the voltage between the TP sensor 3P
connector
terminal and No.2 (Red/Black) terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
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
5-16
, ECM connector B
and then reconnect them.
– Temporary failure (code
reappear).
– GO TO STEP 2.
line
.
main wire harness side No.3 (Blue)
– GO TO STEP 3.
– • Repair open in the Blue wire between
the ECM and TP sensor
• Repair open in the Red/Black wire
between the ECM and TP sensor
• If the main wire harness is correct,
replace the ECM with a new one, and
recheck
main wire harness side No.2 (Red/
– Repair short in the main wire harness
between the ECM and TP sensor.
– Replace the throttle body with a new one
and recheck.
,
,
does not
open circuit
.
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
VCC2
THL
(Blue)
(Red/Black)