Honda ACCORD HYBRID 2005 Service Manual page 409

11. Remove the j u m p e r w i r e f r o m the A/F sensor
(Sensor 1) 8P connector, then reconnect PCM
connector B (24P).
12. Start the engine. Hold the engine speed at
3,000 rpm w i t h o u t load (in Park or neutral) until the
radiator fan comes on, then let it idle 2 minutes.
13. Measure voltage between PCM connector
terminals B12 (B20)* and C12.
PCM C O N N E C T O R S
B (24P)
V S B 1 ( B L U )
I
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
/
17 18 19
20 21 22 23 24
V S B 2 ( R E D / B L U ) *
S G 2
C (22P)
(GRN/YEL)
I
1 2
3 4 5 6 7
8 9 10 11 12 13 14 15
16 17 18 19 20 21 22
Wire side of female t e r m i n a l s
Is there about 0.2 V or less?
Y E S — G o t o step 2 1 .
NO—Go to step 14.
14. Replace the A/F sensor (Sensor 1) (see page
11-213).
15. Reconnect all connectors.
16. Turn the ignition switch ON (II).
17. Reset the PCM w i t h the HDS.
18. Do the PCM idle learn procedure (see page 11-340).
19. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S - l f DTC P2251 and/or P2254* is indicated,
check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the PCM, then go to
step 1. If any other Temporary DTCs or DTCs are
indicated, go to the indicated D T C s
troubleshooting.
NO—Go to step 20.
20. Monitor the OBD STATUS for DTC P2251 and/or
P2254* in the DTCs MENU w i t h the HDS.
Does the screen indicate PASSED?
YES—Troubleshooting is complete. •
NO—If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1) and the PCM, then go to step 1. If the
screen indicates NOT COMPLETED, go to step 18
and recheck.
21. Update the PCM if it does not have the latest
software, or substitute a k n o w n - g o o d PCM
(see page 11-6).
22. Check for Temporary DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S - l f DTC P2251 and/or P2254* is indicated,
check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the PCM, then go to
step 1. If any other T e m p o r a r y DTCs or DTCs are
indicated, go to the indicated D T C s
troubleshooting.
NO—If the PCM was updated, troubleshooting is
complete. If the PCM was substituted, replace the
original PCM (see page 1 1 - 2 1 9 ) . •
11-169