Honda Accord 2008 Manual page 473

07/11/02 09:05:56 61TA0000_110_0154
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P1109: BARO Sensor Circuit Out of
Range High
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Reset the ECM/PCM with the HDS.
2. Start the engine.
3. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P1109 indicated?
−
YES Go to step 4.
NO − Intermittent failure, the system is OK at this
time.
4. 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).
5. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P1109 indicated?
YES − 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.
11-154
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