STEP/SEQUENCE RESULT WHAT TO DO NEXT TM 9-2320-363-20-1 Section 4 TROUBLESHOOTING CHARTS E.  VEH5V - VEHICLE HARNESS +5 VOLTS SUPPLY (CONT’D) VEHSV-10   Check ECM Connectors Turn Ignition off. Terminals and Replace ECM.  Then go Disconnect the vehicle harness connectors are okay. to VEH5V-30. connector at the ECM (if not already disconnected).   Problem found. Repair terminals/connectors. Check terminals at the ECM Then go to VEH5V-30. vehicle harness connector (both the ECM and harness side) for damage; bent, corroded and unseated pins or sockets. Especially terminals #952, #916, #417 and #510.  Install new terminal if in doubt. VEH5V.11 Check for Short to Battery + Turn ignition off. All readings are Go to VEH5V-10. Pull both fuses (or circuit breakers) greater than 10,000 to the ECM. ohms or open. Disconnect the vehicle harness and 5-way power harness Any reading is A short exists between the engine connectors at the ECM. less than 10,000 ohms. +5 volt line (ckt #916) and the Read resistance between sockets line(s) where less than 10,000 A3 and B3 on the vehicle harness ohms was read (either: ckt #240, connector. #241 or #439).  Repair short. Also read resistance between Then go to VEH5V-30. socket A3 on the vehicle harness connector and the following sockets on the 5-way power harness connector: A and C. VEH5V-12    Open Check Connect TPS Both 4.7 to Repair open from ckt #952 to Turn ignition on. 5.2 volts. ECM.  (Look at ECM terminal) Read voltage on PTOSA harness Repair open, then go to connector, socket C (red lead) VEH5V-30. and a good battery ground Repeat above only place red lead Pin C greater Go to VEH5V-7. is socket A of the PTOSA than 4.7 volts and connector. Pin A is zero volts. Change 3  3-345.425