Honda 2004 Odyssey Service Manual page 934

DTC P0720: Problem in Output Shaft
(Countershaft) Speed Sensor Circuit
NOTE: Record all freeze data and review General
Troubleshooting Information (see page 14-247) before
you troubleshoot.
1. Turn the ignition switch ON (II).
2. Check whether the scan tool or the HDS indicates
the code for the manifold absolute pressure (MAP)
sensor.
Does the scan tool or the HDS indicate the code
f or the MAP sensor?
YES Perform the Troubleshooting for the MAP
sensor. Recheck for code P0720 after
troubleshooting.
NO Go to step 3.
3. Turn the ignition switch OFF.
4. Disconnect the output shaft (countershaft) speed
sensor connector.
5. Turn the ignition switch ON (II).
6. Measure the voltage between output shaft
(countershaft) speed sensor connector terminal
No. 1 and body ground.
OUTPUT SHAFT
(COUNTERSHAFT) SPEED
SENSOR CONNECTOR
VCC1 (YEL/RED)
Wire side of female terminals
Is there about 5 V ?
YES Go to step 7.
NO Go to step 14.
7. Turn the ignition switch OFF.
8. Disconnect PCM connector D (16P).
9. Check for continuity between output shaft
(countershaft) speed sensor connector terminal
No. 2 and body ground.
OUTPUT SHAFT
(COUNTERSHAFT) SPEED
SENSOR CONNECTOR
NC (BLU)
Wire side of female terminals
Is there continuity?
YES Repair short to ground in the wire between
PCM connector terminal D10 and the output shaft
(countershaft) speed sensor.
NO Go to step 10.
10. Check for continuity between output shaft
(countershaft) speed sensor connector terminal
No. 3 and body ground.
OUTPUT SHAFT
(COUNTERSHAFT) SPEED
SENSOR CONNECTOR
Wire side of female terminals
Is there continuity?
YES Go to step 11.
NO Repair open in the wire between PCM
connector terminal D16 and the countershaft speed
sensor.
NCSG (GRN)
(cont'd)
14-321