CAB AS 4262237 - Caterpillar

Diagnostics CMD5
When a fault occurs in the control system, a diagnostic indication will appear. The diagnostic indication alerts the operator that a problem exists. The SPN/FMI codes indicate the type of failure and will be used the dealer technician to locate and resolve the fault. The number in parentheses indicates the severity level of the fault. By acknowledging the diagnostic by pressing the Acknowledge button, the fault will disappear.Details of the diagnostics will be logged and stored as either 'Active' or 'Logged' and information will be stored including the following:
Source Address
SPN
FMI
Description of FaultActive and logged diagnostics
Illustration 2 g03803686
Diagnostic window
Press and hold the "Acknowledge" button for 2 seconds to access information on all current and past (logged) diagnostics . The screen shown in Illustration 1 will appear.Diagnostics Details
Illustration 3 g03803687
Diagnostics details screen
The diagnostics details screen shows active faults in the left side of the screen. The information includes the following:
Source address
SPN
FMI
Description of each faultThe color of the rectangle indicates the severity of the fault.
Green indicates low severity.
Yellow indicates mid severity.
Red indicates high severity.Tap one of the faults to display the details of the fault. The details are displayed on the right side of the screen in the "Details" field, as shown in Illustration 3.Logged Diagnostics
Illustration 4 g03803688
Logged diagnostics
Refer to Illustration 4. To display logged (past) faults, tap the "Logged" soft button that is highlighted in blue.If all logged diagnostics cannot be displayed on the left side of the screen, a scroll bar (15) will appear. By dragging the scroll bar up or down, all logged diagnostics can be displayed.
Illustration 5 g03803690
Diagnostic details screen
Refer to Illustration 5. Tap one of the logged diagnostics to display the details for that fault.The following information is provided:
Source of the fault
The SPN and FMI codes
Fault description
The current state (logged or active)
The engine hours when fault first occurred and last occurred
The total fault countExit the diagnostics mode by pressing and holding the "Home" button for 2 seconds. The direct-access screen will appear and the user can select the desired group to display.Troubleshooting CMD5
Table 1
Connector Table
Pin Function Pin Function
J1-1 Power J2-1 Configurable Input 1
J1-2 Power Ground J2-2 Configurable Input 2
J1-3 Switched Power J2-3 Video Input 1
J1-4 Switched Output 1 J2-4 Video Ground
J1-5 Switched Output 2 J2-5 Analog Ground
J1-6 CAN 1 Shield J2-6 CAN 2 Shield
J1-7 CAN 1 + J2-7 CAN 2+
J1-8 CAN 1 - J2-8 CAN 2-
J1-9 USB Ground J2-9 Ethernet TD+
J1-10 USB Data - J2-10 Ethernet TD-
J1-11 USB Data + J2-11 Ethernet RD+
J1-12 USB VBus J2-12 Ethernet RD-
Table 2
Symptom Action
Display Does Not Power Up
1. Ensure that connectors are securely inserted.
2. Check wiring for damage or corrosion.
3. Check voltage from power supply of the ship.
4. Check the customer/OEM connector, wiring, and circuit breaker.
J1939 Connection Lost
1. Inspect datalink (J1939) wiring for damage, corrosion, or improper attachment.
Verify correct installation of wiring and terminating resistors for the J1939 datalink at the customer connection point. Refer to the Application and Installation Guide, LEBM0077 for further information required.
Display Does Not Read Data
1. If the engine or transmission parameter(s) are display dashes (----) instead of values,