Honda BF40D Mode D'emploi page 423

4) TP sensor signal line short-circuit inspection
• Check for continuity between the TP sensor 3P
connector main wire harness side No.2
2
(Red/Black) terminal and the engine ground.
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
2
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the TP sensor.
NO - Go to "5) TP sensor inspection."
5) TP sensor inspection
a. Connect the ECM connector A
sensor 3P connector
2
b. Turn the combination switch ON. Measure the TP
sensor voltage using the HDS (Dr. H or pocket
tester).
Is the measurement 4.49 - 4.85V with the throttle
fully open and 0.44 - 0.56V with the throttle fully
closed?
YES - Replace the ECM with a new one and
recheck.
NO - Replace the throttle body with a new one and
recheck.
THL (Red/Black)
and the TP
9
.
423
DTC 7-2: TP sensor voltage is too high
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 GND line open-circuit
inspection."
2) TP sensor GND line open-circuit inspection
a. Turn the combination switch OFF and disconnect
the TP sensor 3P connector
b. Check for continuity between the TP sensor 3P
connector main wire harness side No.3
2
(Green/Red) terminal and the engine ground.
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
2
SG2
(Green/Red)
Is there continuity?
YES - Go to "3) TP sensor inspection."
NO - Repair open in the main wire harness
between the ECM and the TP sensor.
3) TP sensor inspection
a. Connect the TP sensor 3P connector
b. Turn the combination switch ON and measure the
TP sensor voltage using the HDS (Dr. H or pocket
tester).
Is the measurement 4.49 - 4.85V with the throttle
fully open and 0.44 - 0.56V with the throttle fully
closed?
YES - Replace the ECM with a new one and
recheck.
NO - Replace the throttle body with a new one and
recheck.
once and connect it
2
.
2
VIEWED FROM THE
TERMINAL SIDE
.
2
5-28