PLATE 6T0842 - Caterpillar

Illustration 2 g02497162
Types of Engine Control Modules
Table 7
Terminal Locations for Connection of the 170-3519 Harness
ECM Type ADEM 3 ADEM 4
Connector P2 P1 P2 P1
Timing Calibration +
(White)
(Terminal 1) Location 22 24 26 24
Timing Calibration -
(Yellow)
(Terminal 2) Location 23 25 36 25
Table 8
Troubleshooting Test Steps Values Results
4. Connect the 7X-1695 Cable as
A. If the engine harness is equipped with a connector for timing calibration, connect the 7X-1695 Cable as to the connector for timing calibration and to the transducer.
B. If the engine harness is not equipped with a connector for timing calibration, or the connector is not easily accessible, a connector can be installed. The connector can be installed on either ECM connector.
C. Refer to Illustration 2 to determine the type of engine ECM. Also, determine the ECM connector that is easily accessible.
D. Refer to Table 7 to determine the proper terminal locations for the connector that is easily accessible.
E. Remove the sealing plugs from the appropriate terminals. Do not discard the sealing plugs. The sealing plugs may be reinstalled when the timing calibration is complete.
F. Install the WH(White) wire of the 170-3519 Harness into the appropriate location.
G. Install the YL(Yellow) wire of the 170-3519 Harness into the appropriate location. Disregard the pin-outs on the label of the harness.
H. Ensure that each wire is installed into the correct location. The timing calibration will not be successful if the wires are installed incorrectly.
Wiring
Result: The wiring is installed correctly.
Proceed to Test Step 5.
5. Check for Diagnostic Codes
A. Connect Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
B. Start the engine and run the engine until the engine is at the normal operating temperature.
C. Check for active diagnostic codes. Wait at least 30 seconds in order for the codes to become active.
The engine must not have any active diagnostic codes during the timing calibration except for a 261-13 or 637-13 diagnostic code.
Diagnostic codes
Result: There are active codes other than a 261-13 or 637-13 diagnostic code.
Troubleshoot the active diagnostic other than the 261-13 or 637-13 diagnostic codes.
Result: There are no active codes other than a 261-13 or 637-13 diagnostic code.
Proceed to Test Step 6.
6. Calibrate the Timing
A. After the engine has warmed up, access the "Timing Calibration" screen on the Cat ET. Access the following display screens in order:
Service
Calibrations
Timing Calibration
B. Set the engine speed to 1100 50 rpm. The engine speed must be steady within this rpm range in order for the calibration to be successful.
C. To calibrate the timing, select "Continue" on Cat ET. Wait until Cat ET indicates that the timing is calibrated.
D. Perform the following procedure if Cat ET indicates that the timing is calibrated:
1. Set the engine speed to low idle.
2. Disconnect the 7X-1695 Cable as before you exit the "Timing Calibration" screen. Otherwise, diagnostic codes may be activated.
3. Exit the "Timing Calibration" screen on Cat ET.
4. Remove the electrical power from the ECM.
5. Remove the transducer and remove the transducer adapter.
6. Reinstall the original components into the