Usage:
Use the CHECK ENGINE/DIAGNOSTIC lamp in the cab (if equipped) to determine the diagnostic flash code. Otherwise see an authorized dealer. Follow the OEM truck manufacturer's instructions to obtain engine diagnostic codes for trucks equipped with electronic dashboards.
The Cruise Control Switches are used to prompt the ECM to provide the system status by flashing the check engine lamp. Turn the ignition key to the ON position with the Cruise Control On/Off Switch in the OFF position. Hold the Set/Resume Switch in either the SET or RESUME position until the Check Engine/Diagnostic lamp begins to flash to indicate one or more two digit flash code(s). The diagnostic lamp will flash diagnostic codes that have occurred since the ECM was powered up.
The sequence of flashes represents the system diagnostic message. The first sequence of flashes represent the first digit of the diagnostic code. After a two second pause, a second sequence of flashes will occur which represent the second digit of the diagnostic code.
Any additional diagnostic flash codes will follow after a pause and be displayed in the same manner.
If the system displays a Flash Code 55 (No Detected Faults) when reading diagnostic flash codes, the system has not detected any system faults since the last power up.
Active diagnostic flash codes may be displayed with the engine running or with the ignition key in the ON position, engine OFF.
Refer to pages 7 and 8 in this manual for a list of diagnostic flash codes and their descriptions.
PID-FMI/Flash Code Cross Reference
3176B, C-10, and C-12 Sensor and Connector Locations
Illustration 1
3176B, C-10, and C-12 Sensor and Connector Locations
Illustration 2
3176B, C-10, and C-12 Sensor and Connector Locations
Illustration 3
3406E Sensor and Connector Locations
Illustration 4
3406E Sensor and Connector Locations
Illustration 5
3406E Sensor and Connector Locations
Illustration 6
3176B, C-10, C-12, and 3406E Component Diagram
Illustration 7
Electrical Connector Diagrams
Illustration 8
Electrical Connectors and Functions
