Honda Accord 2008 Manual page 557

07/11/02 09:12:01 61TA0000_110_0238
Electronic Throttle Control System
DTC Troubleshooting (cont'd)
DTC P0123: TP Sensor A 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. Clear the DTC with the HDS.
3. Check TP SENSOR A in the DATA LIST with the
HDS.
Is there about 4.8 V or more?
−
YES Go to step 4.
NO − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM.
4. Check for Temporary DTCs or DTCs with the HDS.
Are DT C P0123 and P0223 indicated at the same
time?
−
YES Go to step 13.
NO − Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the throttle body 6P connector.
7. Turn the ignition switch to ON (II).
11-238
8. Measure voltage between throttle body 6P
connector terminal No. 1 and body ground.
THROTTLE BODY 6P CONNECTOR
TPSA (RED/BLK)
Wire side of female terminals
Is there about 5 V ?
YES − Go to step 18.
−
NO Go to step 9.
9. Turn the ignition switch to LOCK (0).
10. Jump the SCS line with the HDS.
11. Disconnect ECM/PCM connector C (49P).
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