Honda 2004 Odyssey Service Manual page 783

A/T Gear Position Indicator
D4 Indicator Circuit Troubleshooting (cont'd)
15. Disconnect PCM connector A (31P).
16. Check for continuity between PCM connector
terminal A25 and body ground, and between
terminal A26 and body ground.
PCM CONNECTOR A (31P)
LG2 (BRN/BLK)
Wire side of female terminals
Is there continuity?
YES Go to step 17.
NO Repair open in the wire(s) between PCM
connector terminals A25 or A26, and ground (G101),
or repair poor ground (G101).
17. Turn the ignition switch ON (II).
18. Measure the voltage between PCM connector
terminals A2 and A25, and between terminals A3
and A26.
PCM CONNECTOR A (31P)
IGP2 (YEL/BLK)
LG2 (BRN/BLK)
Wire side of female terminals
Is there battery voltage?
YES Go to step 19.
NO Repair open or short in the wire between PCM
connector terminals A2 or A3 and the PGM-FI main
relay.
14-170
LG1 (BRN/BLK)
IGP1 (YEL/BLK)
LG1 (BRN/BLK)
19. Turn the ignition switch OFF.
20. Reconnect PCM connector A (31P).
21. Connect the digital multimeter between PCM
connector terminals E5 and A25 or A26.
22. Turn the ignition switch ON (II).
PCM CONNECTORS
A (31P)
LG2 (BRN/BLK) LG1 (BRN/BLK)
Wire side of female terminals
Is there voltage f or at least 2 seconds?
YES Check for an open in the wire between PCM
connector terminal E5 and the gauge assembly. If
the wire is OK, check for a faulty D4 indicator bulb
or a faulty printed circuit board in the gauge
assembly.
NO Go to step 23.
D4 IND (GRN/BLK)
E (31P)