Honda 2004 Odyssey Service Manual page 438

11. Check for continuity between PCM connector
terminal C1 (A8) and body ground.
PCM CONNECTORS
PO2SHTC
(BLK/WHT)
A (32P)
Wire side of female terminals
Is there continuity?
YES Repair short in the wire between the PCM
(C1, A8 ) and the HO2S (primary or secondary )
(Sensor 1, Sensor 2 ).
NO Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
12. Measure voltage between HO2S 4P connector
terminal No. 4 and body ground.
PRIMARY/SECONDARY* HO2S (SENSOR 1/
SENSOR 2*) 4P CONNECTOR
IG1
(BLK/YEL)
Wire side of
female terminals
Is there battery voltage?
YES Go to step 13.
NO Repair open in the wire between the primary
HO2S (Sensor 1), secondary HO2S (Sensor 2) and
No. 6 ECU (PCM) CRUISE CONTROL (15A) fuse.
C (31P)
PO2SHTC
(BLK/WHT)*
*
IG1
(BLK/YEL)
Terminal side of
male terminals
13. Turn the ignition switch OFF.
14. Reconnect the HO2S (primary or secondary )
(Sensor 1, Sensor 2 ) 4P connector.
15. Disconnect PCM connector C (31P) (PCM connector
A, 32P) .
16. Turn the ignition switch ON (II).
17. Measure voltage between PCM connector
terminals C1 (A8) and B2.
PCM CONNECTORS
PO2SHTC
C (31P)
(BLK/WHT)
PG
(BLK)
A (32P)
Wire side of female terminals
Is there battery voltage?
YES Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
NO Repair open in the wire between the PCM
(C1, A8 ) and HO2S (primary or secondary )
(Sensor 1, Sensor 2 ).
B (25P)
SO2SHTC
(BLK/WHT)*
11-129