Dtc 8 (Tp Sensor) - Honda CRF1000 Shop Manual

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PGM-FI SYSTEM

DTC 8 (TP SENSOR)

Probable cause
• Open circuit in the Yellow/red or Gray/black wire
between the TP sensor and ECM/PCM
• Open or short circuit in the Blue/yellow wire between
the TP sensor and ECM/PCM
• Faulty sensor TP sensor
• Faulty ECM/PCM
DTC 8-1 (TP SENSOR LOW VOLTAGE)
• Before starting the inspection, check for loose or
poor contact on the TP sensor 3P (Black) and ECM/
PCM 33P (Black) connectors, and recheck the DTC.
1. TP Sensor System Inspection
Check the TP sensor with the MCS with the throttle
fully closed.
Is about 0 V indicated?
YES
NO
2. TP Sensor System Inspection with throttle
operated
Check that the TP sensor voltage increases
continuously when the throttle is moved from fully
closed position to fully open position, using the data
list menu of the MCS.
Does the voltage increase continuously?
YES
NO
3. TP Sensor Input Voltage Inspection
Turn the ignition switch OFF.
Disconnect the TP sensor 3P (Black) connector
(page 7-12).
Turn the ignition switch ON.
Measure the voltage at the wire harness side 3P
(Black) connector [1].
Connection: Yellow/red (+) – Gray/black (–)
Is the voltage within 4.75 – 5.25 V?
YES
NO
4-16
TP SENSOR
– GO TO STEP 3.
– GO TO STEP 2.
– Intermittent failure
– Faulty TP sensor (replace the throttle body
as assembly)
– GO TO STEP 5.
– GO TO STEP 4.
ECM/PCM
5 V
Y/R
Bu/Y
Gr/Bl
[1]
Y/R Gr/Bl