Honda 2004 Odyssey Service Manual page 685

Automatic Transmission
DTC Troubleshooting (cont'd)
1999-2000 Models
DTC P0720: Problem in Countershaft Speed
Sensor Circuit
NOTE: Record all freeze data and review General
Troubleshooting Information (see page 14-3) before
you troubleshoot.
1. Check the countershaft speed sensor installation.
Is the countershaf t speed sensor installed
properly?
YES Go to step 2.
NO Reinstall and recheck.
2. Disconnect the 2P connector from the countershaft
speed sensor.
3. Measure countershaft speed sensor resistance at
the sensor connector.
COUNTERSHAFT SPEED
SENSOR CONNECTOR
Terminal side of male terminals
Is there 400 600
YES Go to step 4.
NO Replace the countershaft speed sensor (see
page 14-134).
4. Disconnect the D (16P) connector from the PCM.
14-72
?
5. Check for continuity between body ground and the
D10 terminal and D16 terminal individually.
PCM CONNECTOR D (16P)
NC (BLU)
NCSG (GRN)
Wire side of female terminals
Is there continuity?
YES Repair short to ground in the wires between
the D10 and D16 terminals and the countershaft
speed sensor.
NO Go to step 6.
6. Connect the countershaft speed sensor connector.
7. Measure the resistance between the D10 and D16
terminals.
PCM CONNECTOR D (16P)
NC (BLU)
NCSG (GRN)
Wire side of female terminals
Is there 400 600 ?
YES Check for loose terminal fit in the PCM
connectors. If necessary, substitute a known-good
PCM and recheck.
NO Repair loose terminal or open in the wires
between the D10 and D16 terminals and the
countershaft speed sensor.