4-28 FI SYSTEM DIAGNOSIS
“C14” TP SENSOR CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Remove the fuel tank ("5-7).
2) Turn the ignition switch OFF.
3) Check the TP sensor coupler for loose or poor contacts.
If OK, then measure the TP sensor input voltage.
4) Disconnect the TP sensor coupler.
5) Turn the ignition switch ON.
6) Measure the voltage at the Red wire and ground.
7) If OK, then measure the voltage at the Red wire and B/Br
wire.
% TP sensor input voltage: 4.5 – 5.5 V
(
+ Red –
- Ground)
(
+ Red –
- B/Br)
! 09900-25008: Multi circuit tester set
' Tester knob indication: Voltage (()
Is the voltage OK?
DETECTED CONDITION POSSIBLE CAUSE
Output voltage is out of the specified range.
0.1 V Sensor voltage < 4.8 V
• TP sensor maladjusted.
• TP sensor circuit open or short.
• TP sensor malfunction.
• ECM malfunction.
1
YES Go to Step 2
NO
• Loose or poor contacts on the ECM coupler.
• Open or short circuit in the Red wire or B/Br
wire.
1
V
1
V
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