NHTSA ID Number: 10220363
Manufacturer Communication Number: SM2202
TSB/Document Date: 2022-09-22
Summary
SM2022 EV Maintenance and Service Documentation This Service Memorandum is to announce information on Cummins
Power Electric buses now available at Quickserve Online. Dealer must have access to Quickserve to obtain these service maintenance and repair procedures.
DC Charger Contactor Feedback Signal ‐ Voltage Below Normal or
Shorted to Low Source
Connectivity Module ‐ Special Instructions
EVSE1 Status ‐ Condition Exists
High Voltage Isometer Error Flags ‐ Current Above Normal or Grounded
Circuit
High Voltage Isometer Error Flags ‐ Voltage Above Normal or Shorted to
High Source
High Voltage Isometer Error Flags ‐ Data Erratic, Intermittent, or
Incorrect
High Voltage Isometer Error Flags ‐ Data Valid But Below Normal
Operating Range ‐ Moderately Severe Level
High Voltage Isometer Error Flags ‐ Data Valid But Above Normal
Operating Range ‐ Moderately Severe Level
High Voltage Isometer Error Flags ‐ Mechanical System Not Responding
or Out of Adjustment
High Voltage Isometer Isolation Resistances ‐ Data Valid But Below
Normal Operating Range ‐ Most Severe Level
14321
Warning (Solid)
516096
3
Isometer Enable ‐ Voltage Above Normal or Shorted to High Source
14322
Stop (Solid)
516096
4
Isometer Enable ‐ Voltage Below Normal or Shorted to Low Source
14323
Warning (Solid)
516097
12
14324
14325
14523
14524
Warning (Solid)
Stop (Solid)
None
None
520702
516098
520200
520201
18
12
9
9
High Voltage Sensor ‐ Bad Intelligent Device or Component
BTMS Coolant Level ‐ Data Valid But Below Normal Operating Range ‐
Moderately Severe Level
DCDC System ‐ Bad Intelligent Device or Component
Powersteering Pump ‐ Abnormal Update Rate
Air Compressor ‐ Abnormal Update Rate
SPN / FMI Cummins Description
CAN IVT RESULT ‐ Abnormal Update Rate
CAN IVT RESULT U1 ‐ Abnormal Update Rate
Refrigerant Low Pressure Switch ‐ Data Valid But Below Normal
Operating Range ‐ Moderately Severe Level
Refrigerant High Pressure Switch ‐ Data Valid But Below Normal
Operating Range ‐ Moderately Severe Level
Master Power Relay driver ‐ Voltage Above Normal or Shorted to High
Source
Master Power Relay driver ‐ Voltage Below Normal or Shorted to Low
Source
SPN / FMI Cummins Description
(for Blue Bird Diagnostic display)
CAN IVT RESULT ‐ Update Rate
CAN IVT RESULT U1 ‐ Update Rate
Refrigerant Low Press Sw ‐ Below Normal
Refrigerant High Press Sw ‐ Below Normal
Master Power Relay driver ‐ Voltage High
Master Power Relay driver ‐ Voltage Low
HV Active Discharge Driver ‐ Cond Exists
HV Act. Discharge Driver ‐ Voltage High
HV Active Discharge driver ‐ Voltage Low
Propulsion Motor 1 ‐ Drifted High
Propulsion Motor 1 ‐ Drifted Low
Propulsion Motor Cntrl ‐ Update Rate
Propulsion Motor Cntrl ‐ Out of Cal
Propulsion Motor 1 ‐ Voltage High
Low SOC Error ‐ Mod Severe
Low SOC Error ‐ Most Severe
DC Charger Contactor Fdbk ‐ Voltage High
DC Charger Contactor Fdbk ‐ Voltage Low
Connectivity Module ‐ Special Notes
EVSE1 Status ‐ Condition Exists
HV Isometer Error Flags ‐ Current Normal
HV Isometer Error Flags ‐ Voltage High
HV Isometer ‐ Data Quality Error
HV Isometer Error Flags ‐ Mod Severe
HV Isometer Error Flags ‐ Mod Severe
HV Isometer Error Flags ‐ Not Responding
HV Isometer Resistances Low ‐ Severe
Isometer Enable ‐ Voltage High
Isometer Enable ‐ Voltage Low
HV Sensor ‐ Bad Device
Batt Coolant Level ‐ Mod Severe Level
DCDC System ‐ Bad Device
Powersteering Pump ‐ Update Rate
Air Compressor ‐ Update Rate
Cummins
Fault Code
#
14525
Lamp (Service
Indicator)
J1939
SPN
J1939
FMI
None
520233
9
Smart Heater Datalink Message ‐ Abnormal Update Rate
15234
Stop (Solid)
520200
6
Powersteering Pump ‐ Current Above Normal or Grounded Circuit
15235
Stop (Solid)
520200
3
Powersteering Pump ‐ Voltage Above Normal or Shorted to High Source
15236
Stop (Solid)
520200
4
15237
Stop (Solid)
520200
16
15238
Stop (Solid)
520200
15
15239
Stop (Solid)
520200
1
15241
Stop (Solid)
520200
0
Powersteering Pump ‐ Voltage Below Normal or Shorted to Low Source
Powersteering Pump ‐ Data Valid But Above Normal Operating Range ‐
Moderately Severe Level
Powersteering Pump ‐ Data Valid But Above Normal Operating Range ‐
Least Severe Level
Powersteering Pump ‐ Data Valid But Below Normal Operating Range ‐
Most Severe Level
Powersteering Pump ‐ Data Valid But Above Normal Operating Range ‐
Most Severe Level
15242
Stop (Solid)
520200
12
Powersteering Pump ‐ Bad Intelligent Device or Component
15243
Stop (Solid)
520201
6
Air Compressor ‐ Current Above Normal or Grounded Circuit
15244
Stop (Solid)
520201
3
Air Compressor ‐ Voltage Above Normal or Shorted to High Source
15245
Stop (Solid)
520201
4
15246
Stop (Solid)
520201
16
15247
Stop (Solid)
520201
15
15248
15249
15251
15252
15253
Stop (Solid)
Stop (Solid)
Stop (Solid)
Warning (Solid)
Warning (Solid)
520201
520201
520201
517148
517148
1
31
12
12
31
15254
Warning (Solid)
517148
15
15255
Warning (Solid)
517148
16
15256
15257
15258
Warning (Solid)
Warning (Solid)
Warning (Solid)
517148
517149
517149
7
12
31
15259
Warning (Solid)
517149
15
15261
Warning (Solid)
517149
16
15262
15263
15264
Warning (Solid)
Warning (Solid)
Warning (Solid)
517149
517150
517150
7
12
31
15265
Warning (Solid)
517150
15
15266
Warning (Solid)
517150
16
15267
Warning (Solid)
517150
7
Air Compressor ‐ Voltage Below Normal or Shorted to Low Source
Air Compressor ‐ Data Valid But Above Normal Operating Range ‐
Moderately Severe Level
Air Compressor ‐ Data Valid But Above Normal Operating Range ‐ Least
Severe Level
Air Compressor ‐ Data Valid But Below Normal Operating Range ‐ Most
Severe Level
Air Compressor ‐ Condition Exists
Air Compressor ‐ Bad Intelligent Device or Component
Battery Heater 1 ‐ Bad Intelligent Device or Component
Battery Heater 1 ‐ Condition Exists
Battery Heater 1 ‐ Data Valid But Above Normal Operating Range ‐
Least Severe Level
Battery Heater 1 ‐ Data Valid But Above Normal Operating Range ‐
Moderately Severe Level
Battery Heater 1 ‐ Mechanical System Not Responding or Out of
Adjustment
Cabin Heater 1 ‐ Bad Intelligent Device or Component
Cabin Heater 1 ‐ Condition Exists
Cabin Heater 1 ‐ Data Valid But Above Normal Operating Range ‐ Least
Severe Level
Cabin Heater 1 ‐ Data Valid But Above Normal Operating Range ‐
Moderately Severe Level
Cabin Heater 1 ‐ Mechanical System Not Responding or Out of
Adjustment
Cabin Heater 2 ‐ Bad Intelligent Device or Component
Cabin Heater 2 ‐ Condition Exists
Cabin Heater 2 ‐ Data Valid But Above Normal Operating Range ‐ Least
Severe Level
Cabin Heater 2 ‐ Data Valid But Above Normal Operating Range ‐
Moderately Severe Level
Cabin Heater 2 ‐ Mechanical System Not Responding or Out of
Adjustment
15268
Warning (Solid)
520233
12
Smart Heater Datalink Message ‐ Bad Intelligent Device or Component
SPN / FMI Cummins Description
SPN / FMI Cummins Description
(for Blue Bird Diagnostic display)
Smart Heater Datalink ‐ Update Rate
Powersteering Pump ‐ Current High
Powersteering Pump ‐ Voltage High
Powersteering Pump ‐ Voltage Low
Powersteering Pump High ‐ Mod Severe
Powersteering Pump High ‐ Least Severe
Powersteering Pump Low ‐ Most Severe
Powersteering Pump High ‐ Most Severe
Powersteering Pump ‐ Bad Device
Air Compressor ‐ Current High
Air Compressor ‐ Voltage High
Air Compressor ‐ Voltage Low
Air Compressor High ‐ Mod Severe
Air Compressor High ‐ Least Severe
Air Compressor Low ‐ Most Severe
Air Compressor ‐ Condition Exists
Air Compressor ‐ Bad Device
Battery Heater 1 ‐ Bad Device
Battery Heater 1 ‐ Condition Exists
Battery Heater 1 High ‐ Least Severe
Battery Heater 1 High ‐ Mod Severe
Battery Heater 1 ‐ Not Responding
Cabin Heater 1 ‐ Bad Device
Cabin Heater 1 ‐ Condition Exists
Cabin Heater 1 High ‐ Least Severe
Cabin Heater 1 High ‐ Mod Severe
Cabin Heater 1 ‐ Not Responding
Cabin Heater 2 ‐ Bad Device
Cabin Heater 2 ‐ Condition Exists
Cabin Heater 2 High ‐ Least Severe
Cabin Heater 2 High ‐ Mod Severe
Cabin Heater 2 ‐ Not Responding
Smart Heater Datalink ‐ Bad Device
Cummins
Fault Code
#
Lamp (Service
Indicator)
J1939
SPN
J1939
FMI
15269
Warning (Solid)
520233
3
15271
15291
15292
15293
15294
15295
15296
Warning (Solid)
Warning (Solid)
Warning (Solid)
Warning (Solid)
Warning (Solid)
Warning (Solid)
Warning (Solid)
520233
517148
517148
517149
517149
517150
517150
4
13
14
13
14
13
14
SPN / FMI Cummins Description
Smart Heater Datalink Message ‐ Voltage Above Normal or Shorted to
High Source
Smart Heater Datalink Message ‐ Voltage Below Normal or Shorted to
Low Source
Battery Heater 1 ‐ Out of Calibration
Battery Heater 1 ‐ Special Instructions
Cabin Heater 1 ‐ Out of Calibration
Cabin Heater 1 ‐ Special Instructions
Cabin Heater 2 ‐ Out of Calibration
Cabin Heater 2 ‐ Special Instructions
SPN / FMI Cummins Description
(for Blue Bird Diagnostic display)
Smart Heater Datalink ‐ Voltage High
Smart Heater Datalink ‐ Voltage Low
Battery Heater 1 ‐ Out of Calibration
Battery Heater 1 ‐ Special Instructions
Cabin Heater 1 ‐ Out of Calibration
Cabin Heater 1 ‐ Special Instructions
Cabin Heater 2 ‐ Out of Calibration
Cabin Heater 2 ‐ Special Instructions
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TSB/Document ID: SM2202
Replacement Service Bulletin Number:
MFR Communication Date: 2022-09-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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