Honda Element. Manual — part 455

Is DTC P2123 indicated?

YES -Check for poor connections or loose terminals at APP sensor A and the ECM/PCM, then go to step
1. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE
ECM/PCM ), 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 ECM/PCM REPLACEMENT ). If any other Temporary DTCs or
DTCs are indicated, go to the INDICATED DTCS TROUBLESHOOTING.

DTC P2127: APP SENSOR B (TP SENSOR E) CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).

2. Check APP SENSOR B in the DATA LIST with the HDS.

Is there about 0.1 V or less?

YES -Go to step 3.

NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
APP sensor B and the ECM/PCM.

3. Turn the ignition switch OFF.

4. Disconnect the APP sensor 6P connector.

5. Turn the ignition switch ON (II).

6. Measure voltage between APP sensor 6P connector terminals No. 1 and No. 2.

Fig. 34: Measuring Voltage Between APP Sensor 6P Connector Terminals No. 1 And No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information (see GENERAL
TROUBLESHOOTING INFORMATION ).

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE Electronic Throttle Control System - Element

YES -Go to step 7.

NO -Go to step 17.

7. Turn the ignition switch OFF.

8. Jump the SCS line with the HDS.

9. Disconnect ECM/PCM connector A (31P).

10. Check for continuity between APP sensor 6P connector terminal No. 3 and body ground.

Fig. 35: Checking Continuity Between APP Sensor 6P Connector Terminal No. 3 And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short in the wire between APP sensor B and the ECM/PCM (A25), then go to step 20.

NO -Go to step 11.

11. Connect APP sensor 6P connector terminal No. 3 to body ground with a jumper wire.

Fig. 36: Connecting APP Sensor 6P Connector Terminal No. 3 To Body Ground With A Jumper
Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE Electronic Throttle Control System - Element

12. Check for continuity between ECM/PCM connector terminal A25 and body ground.

Fig. 37: Checking Continuity Between ECM/PCM Connector Terminal A25 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 13.

NO -Repair open in the wire between APP sensor B and the ECM/PCM (A25), then go to step 20.

13. Reconnect ECM/PCM connector A (31P).

14. Connect APP sensor 6P connector terminals No. 1 and No. 3 with a jumper wire.

Fig. 38: Connecting APP Sensor 6P Connector Terminals No. 1 And No. 3 With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

15. Turn the ignition switch ON (II).

16. Check APP SENSOR B in the DATA LIST with the HDS.

Is there about 0.1 V or less?

YES -Go to step 25.

NO -Go to step 18.

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE Electronic Throttle Control System - Element

17. Measure voltage between ECM/PCM connector terminals A20 and A23.

Fig. 39: Measuring Voltage Between ECM/PCM Connector Terminals A20 And A23
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Repair open in the wire between APP sensor B and the ECM/PCM (A20), then go to step 20.

NO -Go to step 25.

18. Turn the ignition switch OFF.

19. Replace the APP sensor (see APP SENSOR REPLACEMENT ).

20. Reconnect all connectors.

21. Turn the ignition switch ON (II).

22. Reset the ECM/PCM with the HDS.

23. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

24. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2127 indicated?

YES -Check for poor connections or loose terminals at APP sensor B and the ECM/PCM, then go to step
1.

NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the
INDICATED DTCS TROUBLESHOOTING.

25. Turn the ignition switch OFF.

26. Reconnect all connectors.

27. Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ), or

substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).

28. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2127 indicated?

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE Electronic Throttle Control System - Element