Honda PCX150 2013 Service Manual page 121

5. TP Sensor Output Line Short Circuit Inspection
Check for continuity between the sensor unit SP
(Black) connector [1] terminal of the wire harness
side and ground with ECM 21 P (Gray) connector
disconnected.
CONNECTION: Yellow/blue - ground
STANDARD: No continuity
Is there continuity?
YES
- Short circuit in the Yellow/blue wire
NO - GO TO STEP 6.
6. TP Sensor Input Voltage Inspection
Connect the ECM 21 P (Gray) connector.
Turn the ignition switch ON.
Measure the voltage between the sensor unit SP
(Black) connector [1] of the wire harness side and
ground.
CONNECTION:Yellow/orange (+) - Ground (-)
STANDARD: 4. 75 - 5.25 V
Is the voltage within 4.75- 5.25 V?
YES - Replace the sensor unit with a new one
and recheck (Faulty TP sensor).
NO - GO TO STEP 7.
7. TP Sensor Input Line Open Circuit Inspection
Turn the ignition switch OFF.
Disconnect the ECM 21 P (Gray) connector.
Check for continuity between the sensor unit SP
(Black) connector [1] and ECM 21 P (Gray)
connector [2] of the wire harness side.
CONNECTION:Yellow/orange - B21 (Yellow/
orange)
STANDARD: Continuity
Is there continuity?
YES - Replace the ECM with a new one and
recheck.
NO - Open circuit in the Yellow/orange wire.
[1]
Yellow/
[2]
PGM-FI
[1]
Yellow/
blue