Honda ACCORD HYBRID 2005 Service Manual page 406

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 P2245: Rear A/F Sensor (Bank 1,
Sensor 1) VCENT Line Low Voltage
DTC P2249: Front A/F Sensor (Bank 2,
Sensor 1) VCENT Line Low Voltage
NOTE: Information marked w i t h an asterisk C) 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 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle 2 minutes.
4. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P2245 and/or P2249* indicated?
YES—Goto step 5.
NO—Intermittent failure, system is OK at this time.
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. Check for continuity between PCM connector
terminal B13 (B21)* and body g r o u n d .
PCM CONNECTOR B (24P)
VCENTB1 (RED)
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 C E N T B 2 (RED/WHT)*
Wire side of female terminals
Is there continuity?
YES—Repair short in the wire between the PCM
(B13 ( B 2 1 D and the A/F sensor (Sensor 1), then go
to step 14.
NO—Go to step 10.
10. Reconnect PCM connector B (24P).
11. 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.
11-166