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Symptom Tree t099
| Cause | Correction |
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Programmable parameters or selected features are not correct |
Check the programmable parameters and the selected features with an electronic service tool. Set the parameters and features again, if necessary. Refer to Procedure 019-078 in Section 19.Check the J1939 multiplexing programmable parameters. Set the multiplexing parameters according to OEM guidelines. Refer to Multiplexing Troubleshooting Service Bulletin 4021378. |
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Engine idle speed is set at either the minimum or the maximum allowable value |
The idle adjust switch will not adjust the idle speed outside the allowable range. Refer to Procedure 019-052 in Section 19. |
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|
Low-idle adjust switch feature is not enabled |
Check the low-idle adjust switch feature with an electronic service tool. Refer to Procedure 019-078 in Section 19. |
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Low-idle adjust switch and circuit is malfunctioning |
Check the idle adjust switch and circuit. Refer to Procedure 019-052 and Procedure 019-053 in Section 19. |
