Ecm Power/Ground Line Inspection - Honda NSA700A DN-1 2009 Service Manual

ECM POWER/GROUND LINE
INSPECTION
ENGINE DOES NOT START (MIL NO BLINKS)
1. ECM Power Input Voltage Inspection
Disconnect the ECM 33P connectors (page 6-68).
Turn the ig n itio n sw itch ON and engine stop
sw itch "O".
M easure the voltage at the ECM 33P (Black) con­
nector te rm in al and ground.
CONNECTION: A4 (+) - Ground (-)
TOOL:
Test probe
Is the re b a tte ry v o lta g e ?
YES - GO TO STEP 2.
NO - GO TO STEP 4.
2. ECM Ground Line Inspection
Turn the ig n itio n sw itch OFF.
Check fo r co n tin u ity between the ECM 33P con­
nector term inals and ground.
CONNECTION: A23 - Ground
B4 - Ground
TOOL:
Test probe
Is the re c o n tin u ity ?
YES - GO TO STEP 3.
NO - Open circuit in the ground line
3. Sensor Power Line Inspection
Disconnect the TP sensor 3P (Black) connector
(page 6-8).
Check fo r c o n tin u ity between the TP sensor 3P
connector o f the w ire harness side and ground.
CONNECTION: Yellow/red - Ground
Is the re c o n tin u ity ?
NO - S hort circ u it in the Yellow/red w ire
YES - In te rm itte n t failure
07ZAJ-RDJA110
ECM 33P CONNECTORS
(W ire side o f fem ale term inal)
I __I____a ____I--------
07ZAJ-RDJA110
TP SENSOR 3P (BLACK) CONNECTOR
(W ire side o f fem ale term inal)
FUEL SYSTEM (PGM-FI)
r
I
A23
_ / o \
K§>
B4