Honda ACCORD HYBRID 2005 Service Manual page 414

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 P2627: Rear A/F Sensor (Bank 1,
Sensor 1) LABEL Circuit Low Voltage
DTC P2630: Front A/F Sensor (Bank 2,
Sensor 1) LABEL Circuit Low 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 on, then let it idle 2 minutes.
4. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P2627 and/or P2630* indicated?
Y E S — G o t o step 5.
NO—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 the P C M . B
5. Turn the ignition switch OFF.
6. J u m p the SCS line w i t h the HDS.
7. Disconnect PCM connector B (24P).
8. 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
9 10 11 12 13 14 15
17 18 19 20 2122
6 7
23 24
V L B L B 2 ( W H T / R E D ) *
W i r e side of f e m a l e t e r m i n a l s
Is there continuity?
Y E S — G o t o step 9.
N O — G o t o step 17.
9. Disconnect the A/F sensor (Sensor 1) 8P connector.
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)
17
2 3 4 5
10 11
20
13
21
14
22
7
23 24
V L B L B 2 ( W H T / R E D ) *
W i r e side of f e m a l e t e r m i n a l s
Is there continuity?
YES—Repair short in the w i r e between the PCM
(B7 (B15)*) and the A/F sensor (Sensor 1), then go
to step 12.
N O — G o t o step 1 1 .
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