Honda TRX680FA Service Manual page 136

FUEL SYSTEM (PGM-FI)
3. MAP Sensor Input Voltage Inspection
Turn the ignition switch OFF.
Remove the jumper wire.
Turn the ignition switch ON and engine stop
switch "O".
Measure the voltage at the wire harness side ter-
minals.
Connection: Brown (+) - Green/red (-)
te the voltage within 4.75 - 5.25V?
YES - GO TO STEP 4.
NO - Open circuit in Green/red or Brown wire
4. MAP Sensor Output Line Open Circuit Inspec-
tion
Turn the ignition switch OFF.
Disconnect the PCM 33P (Gray) connector.
Check for continuity of the Light green wire
between the MAP/TP sensor 5P (Black) connec-
tor terminal and the PCM 33P (Gray) connector
terminal.
TOOL:
Test probe 07ZAJ-RDJA110
Connection: B25 - Light green
te there continuity?
YES - Replace the PCM with a known good
one, and recheck
NO - Open circuit in Light green wire
DTC 7-1 (ECT SENSOR LOW
VOLTAGE)
1. ECT Sensor System Inspection
Turn the ignition switch ON and engine stop
switch "O".
Check the ECT sensor with the HDS pocket
tester.
te about 0 V indicated?
NO - • Intermittent failure.
• Loose or poor contact on the ECT
sensor connector.
YES - GO TO STEP 2.
MAP/TP SENSOR 5P (BLACK) CONNECTOR
(Wire side of female terminal)
MAP/TP SENSOR 5P (BLACK) CONNECTOR
(Wire side of female terminal)
[ I—I - J
r
I
w
I
j
/ B25
PCM 33P (GRAY) CONNECTOR
(Wire side of female terminal)
Lg ->
6-20