0385664 JOHNSON RING SET, Std.

Table 1
Diagnostic Trouble Codes for the Indicator Lamps    
J1939 Code    Description    Notes    
3697-5     Particulate Trap Lamp Command : Current Below Normal     The Electronic Control Module (ECM) detects the following conditions:
Low current in the output from the ECM to the DPF lamp for 0.6 seconds
There are no active 168 diagnostic codes.
The ECM has been powered for at least 0.25 seconds.
This diagnostic code will detect a fault in the circuit for the DPF lamp. The fault is most likely to be an open circuit.    
3697-6     Particulate Trap Lamp Command : Current Above Normal     The ECM detects the following conditions:
High current in the output from the ECM to the DPF lamp for 0.6 seconds
There are no active 168 diagnostic codes.
The ECM has been powered for at least 0.25 seconds.
This diagnostic code will detect a fault in the circuit for the DPF lamp. The fault is most likely to be caused by a high side short to ground or a low side short to power.    
3698-5     Exhaust System High Temperature Lamp Command : Current Below Normal     The ECM detects the following conditions:
Low current in the output from the ECM to the HEST lamp.
There are no active 168 diagnostic codes.
The ECM has been powered for at least 2 seconds.
This diagnostic code will detect a fault in the circuit for the HEST lamp. The fault is most likely to be an open circuit.    
3698-6     Exhaust System High Temperature Lamp Command : Current Above Normal     The ECM detects the following conditions:
High current in the output from the ECM to the HEST lamp.
There are no active 168 diagnostic codes.
The ECM has been powered for at least 2 seconds.
This diagnostic code will detect a fault in the circuit for the HEST lamp. The fault is most likely to be caused by a high side short to ground or a low side short to power.    Also use this procedure under the following circumstances:
The lamps are not receiving battery voltage.
The lamps are not operating correctly.The following diagnostic lamps are available:
High Exhaust System Temperature (HEST) lamp
Diesel Particulate Filter (DPF) lampThe electronic service tool can be used as a diagnostic aid in order to switch the individual lamps ON and OFF. Note: The diagnostic aid that switches the lamps is contained in the "Override" section in the "diagnostics" menu of the electronic service tool.
Illustration 1 g02456217
Schematic of the circuit for the indicator lamps
Illustration 2 g02456218
Typical example of the pin locations on the P1 connector for the indicator lamps (28) DPF lamp (29) HEST lamp (48) Battery (+) (52) Battery (+) (53) Battery (+) (55) Battery (+) (57) Battery (+) (61) Ground (63) Ground (65) Ground (67) Ground (69) Ground (70) Ignition keyswitchTest Step 1. Inspect Electrical Connectors and Wiring
Turn the keyswitch to the OFF position.
Thoroughly inspect the P1 connector and the lamp connections. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the P1 connector that are associated with the indicator lamps.
Check the screw for the P1 connector for the correct torque of 6 N m (53 lb in).
Check the harness for abrasions and for pinch points from the battery to the ECM.Results:
OK - Proceed to Test Step 2.
Not OK - Repair: Repair the connectors or the harness and/or replace the connectors or the harness. Ensure that all of the seals are correctly in place and ensure that the connectors are correctly connected.Verify that the repair eliminates the fault.STOPTest Step 2. Inspect the Lamp, the Fuse, and the Power Supply
Disconnect the lamp from the harness. Inspect the lamp in order to determine if the lamp has failed.
Measure the resistance across the two terminals of the lamp. If the resistance is more than 2000 Ohms, the bulb has failed.
Check the battery by connecting a test lamp across the terminal of the battery.Results:
The lamp has less than 2000 Ohms resistance and the power supply is OK. - The lamp appears to be operating correctly at this time. Proceed to Test Step 3.
The lamp does not have less than 2000 Ohms resistance or the power supply is not OK. - Repair: Replace the suspect component or repair the suspect component. Verify that the repairs have eliminated the fault.STOPTest Step 3. Measure the Input to the Lamp at the Lamp Socket
Turn the keyswitch to the ON position.
Use the electronic service tool to select the "override" function in order to switch individual lamps ON and OFF.Note: The "Override" function is contained in the "Diagnostics" menu of the electronic service tool.
Measure the voltage at the lamp socket.Results:
The voltage is approximately 24.0 VDC. - Repair: Replace the bulb.Verify that the repair eliminates the fault.If the fault persists, measure the resistance across the two terminals of the lamp. If the resistance is more than 2000 Ohms, the replacement bulb has failed. Replace the bulb and repeat the test. If the fault persists, proceed to Test Step 4.
The voltage is not approximately 24 VDC - Proceed to Test Step 5.Test Step 4. Test the Individual Lamp Circuits
Disconnect the P1 connector.
Temporarily disconnect the wire from the P1 connector socket that