Cummins ISB CM850 (2003-06) Fault Code: 523 PID: 89 SPN: 611 FMI: 2 Auxiliary Intermediate (PTO) Speed Switch Validation – Data Erratic, Intermittent, or Incorrect. The position of the intermediate speed control switch 1 does not match the position of the intermediate speed control validation switch.
Cummins ISB CM850 (2003-06) Fault Code: 523 PID: 89 SPN: 611 FMI: 2 Auxiliary Intermediate (PTO) Speed Switch Validation – Data Erratic, Intermittent, or Incorrect. The position of the intermediate speed control switch 1 does not match the position of the intermediate speed control validation switch.
When activated by switch or hand throttle, the Intermediate Speed Control feature governs engine speed to the corresponding preset speed. The three preset speeds can be adjusted with an increment or decrement switch but can not exceed the low or high idle governor engine speed limits.
If Intermediate Speed Control validation is being use, Intermediate Speed Control Switched Set Speed Three will be used as the validation input.
Possible repairs:
1)Replace the intermediate speed control switch.
2)Repair or replace the OEM harness.
![download Hitachi Construction Machinery MPDr Ver 3.7.0.0 [10.2020] Diagnostic Software](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2023/05/MPDR-3.7.00.png?resize=300%2C300&ssl=1)
![download Hitachi Construction Machinery MPDr Ver 3.7.0.0 [10.2020] Diagnostic Software](https://www.ecuforcetruck.com/wp-content/uploads/2023/05/MPDR.png)
Related products
-
-
-
-
-
Allison 1000 & 2000 Gen 5 Fault Code:U0073 CAN Communication Bus 1 Off
1000 & 2000 Gen 5 -
Allison 1000 & 2000 Gen 5 Fault Code:U0074 CAN Communications BUS 2 Off
1000 & 2000 Gen 5 -
-
-
-
-
-
Allison 1000 & 2000 Gen 5 Fault Code:P2761 TCC PCS Control Circuit Open
1000 & 2000 Gen 5 -
-
Allison 1000 & 2000 Gen 5 Fault Code:P2763 TCC PCS Control Circuit High
1000 & 2000 Gen 5 -
