Honda SH300I 2006, Manual

Page: 131 / 511

FUEL SYSTEM (PGM-FI)
6-21
DTC 8-1 (TP SENSOR LOW VOLTAGE)
• Before starting the inspection, check for loose or
poor contact on the sensor unit 5P (Black) con-
nector and recheck the DTC.
1. TP Sensor System Inspection
Turn the ignition switch ON and engine stop
switch "
".
Check the TP sensor with the HDS pocket tester
when the throttle fully closed.
Is about 0 V indicated?
YES – GO TO STEP 3.
NO – GO TO STEP 2.
2. TP Sensor Inspection
Check the TP sensor voltage is increasing unin-
terrupted when moving the throttle from fully
closed to fully opened using the data list menu
of the HDS pocket tester.
Does the voltage increase continuously?
YES – • Intermittent failure
• Loose or poor contact on the sensor
unit connector
NO – Replace the sensor unit with a new one,
and recheck (Faulty TP sensor)
3. TP Sensor Resistance Inspection
Turn the ignition switch "OFF".
Disconnect the sensor unit 5P (Black) connector.
Measure the resistance at the sensor unit side
connector.
Is the resistance within 0.5 – 0.7 k
Ω
?
YES – GO TO STEP 4.
NO – Replace the sensor unit with a new one,
and recheck (Faulty TP sensor)
4. TP Sensor Output Line Open Circuit Inspection
Disconnect the ECM 33P connector.
Check for continuity between the ECM 33P con-
nector of the wire harness side and sensor unit
5P connector of the wire harness side.
Is there continuity?
YES – GO TO STEP 5.
NO – Open circuit in White/Red wire
Connection: White/Red – Green/orange
STANDARD: 0.5 – 0.7 k
Ω
(20
°
C/68
°
F)
5P (Black) CONNECTOR
(Sensor side of male terminals)
W/R G/O
Connection: White/Red – No. 5 (White/Red)
TOOL:
Test probe
07ZAJ-RDJA110
5P (Black) CONNECTOR
(Wire side of female terminal)
W/R
33P CONNECTOR
(Wire side of female terminals)