Honda BF40D Mode D'emploi page 422

• TP SENSOR TROUBLESHOOTING
DTC 7-1: TP sensor voltage is too low
1) Symptom reproduction test
a. Turn the combination switch OFF. Disconnect the
TP sensor 3P connector
again.
b. Clear the DTC (P. 5-12).
• Continue the procedure when the DTC does not
clear.
c. Turn the combination switch ON. Measure the TP
sensor voltage using the HDS (Dr. H or pocket
tester).
Is the measurement within 0.23 - 4.89V?
YES - Temporary failure (Disappears.)
NO - Go to "2) TP sensor power line open-circuit
inspection."
2) TP sensor power line open-circuit inspection
a. Turn the combination switch OFF and disconnect
the TP sensor 3P connector
b. Turn the combination switch ON. Measure the
voltage between the TP sensor 3P connector
main wire harness side No.1 (Brown/Yellow)
terminal and the engine ground.
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
2
VIEWED FROM THE
TERMINAL SIDE
5-27
once and connect it
2
3) TP sensor signal line open-circuit inspection
.
2
2
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
VCC2
(Brown/Yellow)
422
Is the measurement within 4.75 - 5.25V?
YES - Go to "3) TP sensor signal line open-circuit
inspection."
NO - Repair open in the main wire harness
between the ECM and the TP sensor.
a. Turn the combination switch OFF and disconnect
the ECM connector A .
9
b. Check for continuity between the TP sensor 3P
connector main wire harness side No.2
2
(Red/Black) terminal and the ECM connector A
main wire harness side No.7 (Red/Black) terminal.
ECM CONNECTOR A
MAIN WIRE HARNESS SIDE
9
2
Is there continuity?
YES - Go to "4) TP sensor signal line short-circuit
inspection."
NO - Repair open in the main wire harness
between the ECM and the TP sensor.
9
THL (Red/Black)
VIEWED FROM THE
TERMINAL SIDE