Honda ACCORD HYBRID 2005 Service Manual page 416

PGM-FI System
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P2628: Rear A/F Sensor (Bank 1,
Sensor 1) Label Circuit High Voltage
DTC P2631: Front A/F Sensor (Bank 2,
Sensor 1) Label Circuit High Voltage
NOTE: Information marked w i t h an asterisk (*) applies
to the front bank (Bank 2).
1. Turn the ignition switch ON (II).
2. Clear the DTC w i t h the HDS.
3. Start the engine. Hold the engine speed at
3,000 r p m w i t h o u t load (in Park or neutral) until the
radiator fan comes o n , then let it idle 2 minutes.
4. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P2628 and/or P263V indicated?
Y E S — G o t o step 5.
IMO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and at the PCM.H
5. Turn the ignition switch OFF.
6. J u m p the SCS line w i t h the HDS.
7. Disconnect the A/F sensor (Sensor 1) 8P connector.
8. Disconnect PCM connector B (24P).
9. Connect A/F sensor (Sensor 1) 8P connector
terminal No. 4 to body g r o u n d w i t h a j u m p e r w i r e .
A / F S E N S O R ( S E N S O R 1) 8P C O N N E C T O R
1 2 3 4
6 7 8
VLBLB1 (WHT)
VLBLB2
(WHT/RED)*
J U M P E R WIRE
Wire side of f e m a l e t e r m i n a l s
10. Check for continuity between PCM connector
terminal B7 (B15)* and body g r o u n d .
PCM C O N N E C T O R B (24P)
VLBLB1 (WHT)
1 2
3 | 4 5
6 7
8 9 10 11 12 13 14 15
/
17 18 19
20 21 22 2 3 24
V L B L B 2 ( W H T / R E D ) *
Wire side of f e m a l e t e r m i n a l s
Is there continuity?
YES — G o t o step 11.
NO —Repair open in the w i r e between the PCM
(B7 (B15)*) and the A/F sensor (Sensor 1), then go
to step 19.
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