Honda 2004 Odyssey Service Manual page 780

15. Disconnect the B (25P) connector from the PCM.
16. Check for continuity between body ground and B20
and B22 terminals.
PCM CONNECTOR B (25P)
LG1 (BRN/BLK)
Wire side of female terminals
Is there continuity?
YES Go to step 17.
NO Repair open in the wire(s) between the B20 or
B22 terminal and ground (G101), or repair poor
ground (G101).
17. Turn the ignition switch ON (II).
18. Measure the voltage between terminals B1 and B22,
and between terminals B9 and B20.
PCM CONNECTOR B (25P)
IGP1 (YEL/BLK)
IGP2 (YEL/BLK)
LG1 (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 the
B1 or B9 terminal and the PGM-FI main relay.
LG2 (BRN/BLK)
LG2 (BRN/BLK)
19. Turn the ignition switch OFF.
20. Reconnect the B (25P) connector to the PCM.
21. Connect the digital multimeter between the A14
and B20 or B22 terminals.
22. Turn the ignition switch ON (II).
PCM CONNECTORS
A (32P)
LG1 (BRN/BLK)
D4 IND (GRN/BLK)
Wire side of female terminals
Is there battery voltage f or at least 2 seconds?
YES Check for an open in the wire between the
A14 terminal 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.
B (25P)
LG2 (BRN/BLK)
(cont'd)
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