0913326 JOHNSON O-RING, Plug

Table 1
J1939 Code and Description CDL Code and Description Comments
105-3
Engine Intake Manifold #1 Temperature : Voltage Above Normal 172-3
Engine Intake Manifold #1 Temperature : Voltage Above Normal The code is logged. The A6:E2 Electronic Control Module (ECM) detects voltage that is not in the acceptable range.
105-4
Engine Intake Manifold #1 Temperature : Voltage Below Normal 172-4
Engine Intake Manifold #1 Temperature : Voltage Below Normal The code is logged. The ECM detects voltage that is not in the acceptable range.
110-3
Engine Coolant Temperature Sensor : Voltage Above Normal 110-3
Engine Coolant Temperature Sensor : Voltage Above Normal The code is logged if the engine has been running for more than 7 minutes and an open circuit has been detected.
110-4
Engine Coolant Temperature Sensor : Voltage Below Normal 110-4
Engine Coolant Temperature Sensor : Voltage Below Normal The code is logged. The ECM detects voltage that is not in the acceptable range.
171-3
Ambient Air Temperature : Voltage Above Normal 171-3
Ambient Air Temperature : Voltage Above Normal The code is logged. The ECM detects voltage that is not in the acceptable range.
171-4
Ambient Air Temperature : Voltage Below Normal 171-4
Ambient Air Temperature : Voltage Below Normal The code is logged. The ECM detects voltage that is not in the acceptable range.
172-3
Air Inlet Temperature Sensor : Voltage Above Normal 2526-3
Air Inlet Temperature Sensor : Voltage Above Normal The code is logged.
The ECM detects voltage that is not in the acceptable range.
172-4
Air Inlet Temperature Sensor : Voltage Below Normal 2526-4
Air Inlet Temperature Sensor : Voltage Below Normal The code is logged.
The ECM detects voltage that is not in the acceptable range.
174-3
Fuel Temperature Sensor : Voltage Above Normal 174-3
Fuel Temperature Sensor : Voltage Above Normal The code is logged. The ECM will flag the fuel temperature as invalid data and the fuel temperature is set to a default value of 40 °C (104 °F).
174-4
Fuel Temperature Sensor : Voltage Below Normal 174-4
Fuel Temperature Sensor : Voltage Below Normal The code is logged. The ECM will flag the fuel temperature as invalid data and the fuel temperature is set to a default value of 40 °C (104 °F).
441-3
Auxiliary Temperature 1 : Voltage Above Normal 1836-3
Auxiliary Temperature 1 : Voltage Above Normal The code is logged. The ECM will flag the temperature as invalid data and the temperature is set to a default value.
441-4
Auxiliary Temperature 1 : Voltage Below Normal 1836-4
Auxiliary Temperature 1 : Voltage Below Normal The code is logged. The ECM will flag the temperature as invalid data and the temperature is set to a default value.
1385-3
Auxiliary Temperature Sensor : Voltage Above Normal 1836-3
Auxiliary Temperature Sensor : Voltage Above Normal The code is logged. The ECM will flag the temperature as invalid data and the temperature is set to a default value.
1385-4
Auxiliary Temperature Sensor : Voltage Below Normal 1836-4
Auxiliary Temperature Sensor : Voltage Below Normal The code is logged. The ECM will flag the temperature as invalid data and the temperature is set to a default value.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect to Cat® Electronic Technician (ET).
B. Turn the keyswitch to ON.
C. Access the "Active Diagnostic Code" screen on Cat ET. Wait at least 30 seconds in order for the diagnostic codes to become active.
D. Look for active codes or logged codes from the table above.
Codes
Result: A -3 diagnostic code is active.
Proceed to Test Step 2.
Result: A -4 diagnostic code is active.
Proceed to Test Step 3.
Result: A diagnostic code is logged but not currently active.
Proceed to Test Step 4.
2. Create a Short at the Sensor Connector
A. Turn the keyswitch to OFF.
B. Disconnect the suspect sensor.
C. Install a jumper wire between terminal 1 (sensor signal) and terminal 2 (sensor return) at the sensor connector.
Reference: Refer to the Schematic for pin locations of suspected sensors.
D. Turn the keyswitch to ON.
E. Monitor the diagnostic codes on Cat ET. Check for an active -4 diagnostic code for the suspect sensor. Wait at least 30 seconds in order for the diagnostic codes to become active.
F. Turn the keyswitch to OFF.
Short Circuit
Result: The -3 diagnostic code remains active for the suspect sensor. The jumper wire was not detected, there is an open circuit in the wiring between the sensor and ECM.
Repair: Repair or replace the connectors and/or wiring as necessary. Verify that the repair eliminated the problem.
Result: A -4 diagnostic code became active after creating the short circuit at the sensor connector.
Repair: The wiring is OK. Replace the sensor.
Verify that the problem is resolved.
3. Create an Open at the Suspect Sensor Connector
A. Turn the keyswitch to OFF.
B. Disconnect the sensor connector of the suspect sensor with the active -4 diagnostic code.
C. Turn the keyswitch to ON.
D. Monitor the diagnostic codes on Cat ET. Check for an active -3 diagnostic code for the suspect sensor. Wait at least 30 seconds in order for the diagnostic codes to become active.
E. Turn the keyswitch to OFF.
Open Circuit
Result: The -4 diagnostic code remains active for the suspect sensor. The ECM did not detect the open circuit. There is a short circuit in the wiring between the sensor and the ECM.
Repair: Repair or replace the connectors and/or wiring as necessary. Verify that the repair eliminated the problem.
Result: A -3 diagnostic code became active after disconnecting the sensor.
Repair: The wiring is OK. Replace the sensor.
Verify that the problem is resolved.
4. Perform the "Wiggle Test"
A. Turn the keyswitch to ON.
B. Use Cat ET to run the "Wiggle Test".
C. Slowly wiggle the wiring and the connectors between the P2 connector and the sensor. Slowly wiggle the wiring and the connectors between the P1 connector and the sensor. Pay particular attention to the wiring near each connector. Be sure to wiggle all the wiring.
D. As you wiggle the wiring look for these problems.
- Loose connectors or damaged connectors
- Moisture on the connectors or the wiring
- Damage that is caused by excessive heat
- Damage that is caused by chafing
- Improper routing of wiring
- Damaged insulation
"Wiggle Test"
Result: The wiring failed