SPACER 5V5856 - Caterpillar

Transmission/Chassis ECM and Chassis ECM
The following is a list of codes that are associated with the ECM location code of the machine.
Table 1
Transmission/Chassis ECM (MID 27)
DTC Code Description System Response
1326-2 ECM Location Code: Data erratic, intermittent, or incorrect The transmission control may be unable to communicate with other modules.
Table 2
Chassis ECM (MID 87)
DTC Code Description System Response
1326-2 ECM Location Code: Data erratic, intermittent, or incorrect The transmission control may be unable to communicate with other modules. Root Causes and Schematics
Possible Causes for a Chassis ECM DTC 1326-2 Diagnostic Trouble Code Are:
The wires for the location code are open or the wires are shorted.
The wrong software is installed on an ECM.
Illustration 1 g03414999
Chassis ECM Location Code
Diagnostic Trouble Code Procedure
Prior to beginning this procedure, inspect the harness connectors that are involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. Check the wiring for pinch points or abrasions. Look for and repair areas that indicate wires are exposed. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing a troubleshooting procedure.
Table 3
Troubleshooting Test Steps Values Results
Begin Process For FMI 2 Troubleshooting HERE
1. Verify The Hardware And The Software Part Numbers
A. Using "WinFlash" check that the latest software for each ECM corresponds with the correct location code. Check with your dealer for the latest software part numbers.
B. Confirm the part number of the flash software for the suspect ECM.
D. Confirm the part number of the suspect ECM.
All part numbers are correct. OK - All part numbers are correct.
Proceed to Test Step 2.
NOT OK - No ECM shows any of the location codes listed. There is a problem with the machine harness.
Repair: Repair the machine harness or replace the machine harness.
NOT OK - All part numbers are NOT correct. The installed ECM has the wrong part number or incorrect configuration software is installed.
Repair: Flash the correct configuration software on the ECM with the displayed location code.
Replace the suspect ECM for an ECM with the correct part number.
Refer to Troubleshooting, "Electronic Control Module (ECM) - Flash Program". Prior to replacing an ECM, contact the Technical Communicator for your dealership for possible consultation with Caterpillar. This consultation may greatly reduce repair time.
STOP
2. Inspect The Harness Connections
Refer to Figure 1 for the Transmission/Chassis ECM, or the Chassis ECM.
A. Turn the disconnect switch to the OFF position.
B. Inspect all harness connections that are related to the location codes. Make sure that the connectors are clean and tight.
C. Check the connectors for proper mating. Ensure that all the seals are present and in place.
D. Check the harness for signs of damage or abrasion.
E. Check the wires at the connector. Ensure that the wires are secured tightly into the connector. Take care not to pull the wire out of the connector.
F. Check for exposed wires at the connectors and for nicks or signs of abrasion.
G. Check