Honda Accord 2008 Manual page 503

07/11/02 09:10:07 61TA0000_110_0184
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P2229: BARO Sensor Circuit High
Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Check the BARO SENSOR in the DATA LIST with
the HDS.
Is about 160 kPa ( 47 .2 in.Hg, 1,200 mmHg), or
4.5 V or more indicated?
−
YES Go to step 3.
NO − Intermittent failure, the system is OK at this
time.
3. Update the ECM/PCM if it does not have the latest
software (see page 11-231), or substitute a known-
good ECM/PCM (see page 11-7).
4. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P2229 indicated?
YES − Check for poor connections or loose
terminals at the ECM/PCM. If the ECM/PCM was
updated, substitute a known-good ECM/PCM
(see page 11-7), then recheck. If the ECM/PCM was
substituted, go to step 1.
NO − If the ECM/PCM was updated, troubleshooting
is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-232). If
any other Temporary DTCs or DTCs are indicated,
go to the indicated DTC's troubleshooting.
11-184 11-184
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DTC P2238: A/F Sensor (Sensor 1) AFS
Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P2238 indicated?
−
YES Go to step 4.
NO − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the A/F sensor (Sensor 1) and the ECM/PCM.
4. Turn the ignition switch to LOCK (0).
5. Jump the SCS line with the HDS.
6. Disconnect the A/F sensor (Sensor 1) 4P connector.
7. Disconnect ECM/PCM connector C (49P).
8. Check for continuity between ECM/PCM connector
terminal C29 and body ground.
ECM/PCM CONNECTOR C (49P)
AFS ＋ (RED)
Terminal side of female terminals
Is there continuity?
YES − Repair short in the wire between the ECM/
PCM (C29) and the A/F sensor (Sensor 1), then go to
step 10.
NO − Go to step 9.
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＋
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