Troubleshooting

Table 72
Diagnostic Trouble Codes for the Indicator Lamps
J1939
Code
Description
Notes
623-5 Red Stop Lamp : Current Below Normal The Electronic Control Module (ECM) detects a low current condition in the
circuit for the shutdown lamp.
623-6 Red Stop Lamp : Current Above Normal The ECM detects a high current condition in the circuit for the shutdown
lamp.
624-5 Amber Warning Lamp : Current Below Normal The ECM detects a low current condition in the circuit for the warning lamp.
624-6 Amber Warning Lamp : Current Above Normal The ECM detects a high current condition in the circuit for the warning lamp.
1081-5 Engine Wait to Start Lamp : Current Below Normal The ECM detects a low current condition in the circuit for the wait to start
lamp.
1081-6 Engine Wait to Start Lamp : Current Above Normal The ECM detects a high current condition in the circuit for the wait to start
lamp.
3697-5 Particulate Trap Lamp Command : Current Below
Normal
The ECM detects a low current condition in the circuit for the Diesel Particu-
late Filter (DPF) lamp.
3697-6 Particulate Trap Lamp Command : Current Above
Normal
The ECM detects a high current condition in the circuit for the DPF lamp.
3698-5 Exhaust System High Temperature Lamp Command :
Current Below Normal
The ECM detects a low current condition in the circuit for the High Exhaust
System Temperature (HEST) lamp.
3698-6 Exhaust System High Temperature Lamp Command :
Current Above Normal
The ECM detects a high current condition in the circuit for the HEST lamp.
3702-5 Diesel Particulate Filter Active Regeneration Inhibited
Status : Current Below Normal
The ECM detects a low current condition in the circuit for the DPF disabled
lamp.
3702-6 Diesel Particulate Filter Active Regeneration Inhibited
Status : Current Above Normal
The ECM detects a high current condition in the circuit for the DPF disabled
lamp.
5099-5 Engine Oil Pressure Low Lamp Data : Current Below
Normal
The ECM detects a low current condition in the circuit for the low oil pres-
sure lamp.
5099-6 Engine Oil Pressure Low Lamp Data : Current Above
Normal
The ECM detects a high current condition in the circuit for the low oil pres-
sure lamp.
The Engine Control Module (ECM) provides nine
outputs that can be used to illuminate indicator
lamps. If applicable, some of the outputs can be
programmed to a J1939 device.
Each J1/P1 output is a low side driver.
Low Side Driver – The ECM provides a connection
to ground in order to activate the lamp.
J1939 Device – The ECM sends digital data on the
J1939 data link in order to control the lamp.
Table 73 provides information on the typical lamp
outputs.
UENR0612-07 147
Circuit Tests
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