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.
521389
31
High voltage Bus Control Circuit ‐ Condition Exists
12157
Stop (Solid)
521390
31
High‐Voltage Bus Active Isolation Test Results ‐ Condition Exists
12158
Warning (Solid)
521390
31
High‐Voltage Bus Active Isolation Test Results ‐ Condition Exists
12159
Stop (Solid)
521391
13
12161
Stop (Solid)
521392
1
Battery Distribution Unit ‐ Out of Calibration
High voltage Battery Pack Cell Voltage ‐ Data Valid But Below Normal
Operating Range ‐ Most Severe Level
12162
Warning (Solid)
521392
18
12163
Stop (Solid)
521393
1
12164
Warning (Solid)
521393
18
12165
Stop (Solid)
521394
1
12166
Warning (Solid)
521394
18
12194
Warning (Solid)
516100
3
12195
Warning (Solid)
516100
4
12196
Warning (Solid)
516101
3
12197
Warning (Solid)
516101
4
12198
Warning (Solid)
12897
3
12199
Warning (Solid)
12897
4
12534
12584
Warning (Solid)
Warning (Solid)
6019
1677
7
31
High voltage Battery Pack Cell Temperature ‐ Data Valid But Below
Normal Operating Range ‐ Moderately Severe Level
Coolant Heater Outlet Temperature Sensor ‐ Voltage Above Normal or
Shorted to High Source
Coolant Heater Outlet Temperature Sensor ‐ Voltage Below Normal or
Shorted to Low Source
Power Electronics Coolant Level Sensor ‐ Voltage Above Normal or
Shorted to High Source
Power Electronics Coolant Level Sensor ‐ Voltage Below Normal or
Shorted to Low Source
HVESS Thermal Management System Coolant Level ‐ Voltage Above
Normal or Shorted to High Source
HVESS Thermal Management System Coolant Level ‐ Voltage Below
Normal or Shorted to Low Source
Fused Output #1 ‐ Mechanical System Not Responding or Out of
Adjustment
Auxiliary Heater Mode ‐ Condition Exists
12974
Warning (Solid)
516106
19
High Voltage Isometer Battery Voltage ‐ Received Network Data in Error
12975
Warning (Solid)
516107
19
12976
Warning (Solid)
516108
19
12977
Warning (Solid)
516109
19
HV Isometer Error Flags ‐ Data Error
High Voltage Isometer Error Flags ‐ Received Network Data in Error
High Voltage Isometer Isolation Capacitances ‐ Received Network Data
HV Isometer Capacitances ‐ Data Error
in Error
High Voltage Isometer Isolation Resistances ‐ Received Network Data in
HV Isometer Resistances ‐ Data Error
Error
12978
Warning (Solid)
516110
19
High Voltage Isometer Isolation State ‐ Received Network Data in Error
SPN / FMI Cummins Description
High voltage Battery Pack Cell Voltage ‐ Data Valid But Below Normal
Operating Range ‐ Moderately Severe Level
High voltage Battery Pack Cell Current ‐ Data Valid But Below Normal
Operating Range ‐ Most Severe Level
High voltage Battery Pack Cell Current ‐ Data Valid But Below Normal
Operating Range ‐ Moderately Severe Level
High voltage Battery Pack Cell Temperature ‐ Data Valid But Below
Normal Operating Range ‐ Most Severe Level
SPN / FMI Cummins Description
(for Blue Bird Diagnostic display)
HVIL Segment 1 Status ‐ Cond Exists
HVIL Segment 2 Status ‐ Cond Exists
HVIL Segment 3 Status ‐ Cond Exists
HVIL Segment 4 Status ‐ Cond Exists
HV Bus Control Circuit ‐ Cond Exists
Hv Bus Control Circuit ‐ Cond Exists
HV Bus Active Isolation ‐ Cond Exists
HV Bus Active Isolation ‐ Cond Exists
HV Batt Dist Unit ‐ Out of Calibration
HV Batt Pack Cell Voltage Low ‐ Severe
HV Batt Cell Voltage Low ‐ Mod Severe
HV Batt Pack Cell Current Low ‐ Severe
HV Batt Cell Current Low ‐ Mod Severe
HV Batt Pack Cell Temp ‐ Severe
HV Batt Pack Cell Temp ‐ Mod Severe
Coolant Heater Out Temp ‐ Voltage High
Coolant Heater Out Temp ‐ Voltage Low
Pwr Elect. Coolant Level ‐ Voltage High
Power Elect. Coolant Level‐ Voltage Low
HV Batt Coolant Level ‐ Voltage High
Battery Coolant Level ‐ Voltage Low
Fused Output #1 ‐ Not Responding
Auxiliary Heater ‐ Cond Exists
HV Isometer Batt Voltage ‐ Data Error
HV Isometer Isolation State ‐ Data Error
Cummins
Fault Code
#
Lamp (Service
Indicator)
J1939
SPN
J1939
FMI
12979
Warning (Solid)
516111
19
High Voltage Isometer Voltages Measurement ‐ Received Network Data
HV Isometer Volt Measure ‐ Data Error
in Error
Warning (Solid)
7549
18
Hybrid System Propulsion Coolant Level Switch ‐ Data Valid But Below
Normal Operating Range ‐ Moderately Severe Level
Propulsion Coolant Level Sw ‐ Mod Severe
12983
Warning (Solid)
516133
18
EVSE High‐Voltage Bus Active Isolation Test Status ‐ Data Valid But
Below Normal Operating Range ‐ Moderately Severe Level
EVSE HV Bus Isolation ‐ Mod Severe
13335
Stop (Solid)
516133
1
EVSE High‐Voltage Bus Active Isolation Test Status ‐ Data Valid But
Below Normal Operating Range ‐ Most Severe Level
EVSE HV Bus Isolation Low ‐ Severe
13336
Warning (Solid)
516133
17
13498
Stop (Solid)
521339
12
13499
Warning (Solid)
521339
11
EVSE High‐Voltage Bus Active Isolation Test Status ‐ Data Valid But
Below Normal Operating Range ‐ Least Severe Level
Power Steering Pump High Voltage DC/AC Inverter ‐ Bad Intelligent
Device or Component
Power Steering Pump High Voltage DC/AC Inverter ‐ Root Cause Not
Known
EVSE HV Bus Isolation ‐ Least Severe
13337
13511
Warning (Solid)
521339
13
13512
Stop (Solid)
521339
10
13513
Warning (Solid)
521339
14
P/S Pump Inverter ‐ Out of Calibration
Power Steering Pump High Voltage DC/AC Inverter ‐ Out of Calibration
Power Steering Pump High Voltage DC/AC Inverter ‐ Abnormal Rate of
P/S Pump Inverter ‐ Rate of Change
Change
Power Steering Pump High Voltage DC/AC Inverter ‐ Special
P/S Pump Inverter ‐ Special Instructions
Instructions
Stop (Solid)
521339
16
Power Steering Pump High Voltage DC/AC Inverter ‐ Data Valid But
Above Normal Operating Range ‐ Moderately Severe Level
P/S Pump Inverter ‐ Mod Severe
13514
Warning (Solid)
521339
15
Power Steering Pump High Voltage DC/AC Inverter ‐ Data Valid But
Above Normal Operating Range ‐ Least Severe Level
P/S Pump Inverter ‐ Least Severe
13515
Warning (Solid)
521339
17
Power Steering Pump High Voltage DC/AC Inverter ‐ Data Valid But
Below Normal Operating Range ‐ Least Severe Level
P/S Pump Inverter ‐ Least Severe
13516
Stop (Solid)
521339
7
13518
Warning (Solid)
521339
8
Power Steering Pump High Voltage DC/AC Inverter ‐ Mechanical
System Not Responding or Out of Adjustment
Power Steering Pump High Voltage DC/AC Inverter ‐ Abnormal
Frequency or Pulse Width or Period
P/S Pump Inverter ‐ Not Responding
13517
13519
Warning (Solid)
521339
31
13521
Stop (Solid)
521340
12
P/S Pump Inverter ‐ Cond Exists
Power Steering Pump High Voltage DC/AC Inverter ‐ Condition Exists
Air Compressor High Voltage DC/AC Inverter ‐ Bad Intelligent Device or
Air Compressor Inverter ‐ Bad Device
Component
13522
Warning (Solid)
521340
11
Air Compressor High Voltage DC/AC Inverter ‐ Root Cause Not Known
13523
Warning (Solid)
521340
13
13524
Stop (Solid)
521340
10
Air Compressor High Voltage DC/AC Inverter ‐ Out of Calibration
Air Compressor High Voltage DC/AC Inverter ‐ Abnormal Rate of
Change
13525
Warning (Solid)
521340
14
Air Compressor High Voltage DC/AC Inverter ‐ Special Instructions
13526
Stop (Solid)
521340
16
13527
Warning (Solid)
521340
15
13528
Warning (Solid)
521340
17
SPN / FMI Cummins Description
Air Compressor High Voltage DC/AC Inverter ‐ Data Valid But Above
Normal Operating Range ‐ Moderately Severe Level
Air Compressor High Voltage DC/AC Inverter ‐ Data Valid But Above
Normal Operating Range ‐ Least Severe Level
Air Compressor High Voltage DC/AC Inverter ‐ Data Valid But Below
Normal Operating Range ‐ Least Severe Level
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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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