Honda ACCORD HYBRID 2005 Service Manual page 400

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 P2237: Rear A/F Sensor (Bank 1,
Sensor 1) IP Line High Voltage
DTC P2240: Front A/F Sensor (Bank 2,
Sensor 1) IP Line High Voltage
NOTE: Information marked w i t h an asterisk (*) applies
to the front bank (Bank 2).
1. Turn the ignition switch O N (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 T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P2237 and/or P2240* 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 PCM. •
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. 7 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
IPB1 (GRN)
IPB2 ( G R N / R E D ) *
J U M P E R WIRE
W i r e side of f e m a l e t e r m i n a l s
10. Check for continuity between PCM connector
t e r m i n a l B14 (B22)* and body g r o u n d .
PCM C O N N E C T O R B (24P)
I
IPB1 (GRN)
I
1 2
3 4 5
6 7
8 9 10 11 12 13 14 15
/
17 18 19 20 21 22 23 24
IPB2 ( G R N / 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—Go to step 1 1 .
NO—Repair open in the w i r e between the PCM
(B14 (B22)*) and the A/F sensor (Sensor 1), then go
to step 15.
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