RENR5042-02 131 Troubleshooting Section g01094844 Illustration 62 Sensor connector (A) +5 VDC (B) Common (C) Signal Test Step 1. Inspect the Electrical Connectors and Wiring A. Turn the keyswitch to the OFF position. B. Thoroughly inspect the J1/P1 ECM connector and the J2/P2 ECM connector. Thoroughly inspect the connectors for each analog sensor. Refer to Troubleshooting, “Electrical Connectors - Inspect” for details. C. Perform a 45 N (10 lb) pull test on each of the wires that are associated with the active diagnostic code. D. Check the allen head screw on each ECM connector for the proper torque. Refer to Troubleshooting, “Electrical Connectors - Inspect” for the correct torque values.
E. Check the harness and wiring for abrasions and for pinch points from each sensor back to the ECM. Expected Result: g01102443 Illustration 61 All connectors, pins, and sockets are completely coupled and/or inserted. The harness and wiring are free of corrosion, of abrasion, and of pinch points. P2 ECM connector (P2-15) Signal from the boost pressure sensor (P2-17) Sensor common (P2-28) Signal from the oil pressure sensor (P2-40) Signal from the fuel pressure sensor (P2-57) Atmospheric pressure sensor signal (P2-72) +5 Volt sensor supply Results: OK The harness and wiring are OK. Proceed to Test Step 2. Not OK There is a problem in the connectors and/or wiring. Repair:
Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled.