124 RENR5042-02 Troubleshooting Section Test Step 5. Check Individual Pin Retention into the Socket Results: OK – The connectors are in good repair. Proceed to Test Step 7. Not OK – The connector’s locking mechanism is damaged or missing. Repair: Repair the connector or replace the connector, as required. Verify that the repair eliminates the problem. STOP. Test Step 7. Check the Allen Head Screws on the Connectors g01131604 Illustration 51 Visually inspect the allen head screws for the ECM connectors. Ensure that the threads on each allen head screw are not damaged. Diagram for testing pin retention (typical example) A. Verify that the sockets provide good retention for the pins.
Insert a new pin into each socket one at a time in order to check for a good grip on the pin by the socket. A. Connect the ECM connectors. Expected Result: The sockets provide good retention for the new pin. Results: OK – The terminals are OK. Proceed to Test Step 6. Not OK – Terminals are damaged. Repair: Use the 1U-5804 Crimp Tool to replace the damaged terminals. Verify that the repair eliminates the problem. g01132827 Illustration 52 Allen head screw for the 120 pin ECM connector (typical example) STOP. a. Torque the allen head bolt for the 120 pin ECM connector to 7.0 ± 0.5 N·m (60 ± 4 lb in). Test Step 6. Check the Locking Mechanism of the Connectors A.
Ensure that the connectors lock properly. After locking the connectors, ensure that the two halves cannot be pulled apart. B. Verify that the latch tab of the connector is properly latched. Also verify that the latch tab of the connector returns to the locked position. Expected Result: The connector will securely lock. The connector and the locking mechanism are without cracks or breaks. g01132849 Illustration 53 Allen head screw for the 70 pin ECM connector (typical example)