CHECK ENGINE LIGHT (CEL) AND FAULT ARE INTERMITTENT.

TM 9-2320-364-20-1

2-13. DDEC II TROUBLESHOOTING (CONT).

D CHECK ENGINE LIGHT (CEL) AND FAULT ARE INTERMITTENT.

INITIAL SETUP

Tools and Special Tools

Equipment Condition

Reader, Diagnostic (Item 53, Appendix G)

Engine OFF, (TM 9-2320-364-10)

Parking brake applied, (TM 9-2320-364-10)

References

Wheels chocked, (TM 9-2320-364-10)

TM 9-2320-364-10

START

KNOWN INFO

TEST OPTIONS

CHECK ENGINE light (CEL)

Are historical codes

DDR test.

is erratic or intermittent.

displayed on DDR?

REASON FOR QUESTION

POSSIBLE PROBLEMS

Isolate Fault.

YES

If historical codes are displayed, go to D1.

If CEL and Fault are intermittent, go to D2.

If CEL is flashing a valid active code, go to D3.

If crane high idle is not working, go to D4.

If engine brake is not working, go to D5.