EG–510 ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING STANDARD VALUE OF ECM TERMINALS Connectors of the engine control module are waterproof and are the bolt type. For waterproof type connectors, in order to measure the voltage of ECM terminals and the resistance of connected parts, connect the inspection sub wire harness between the ECM and vehicle wire harness, then do the inspection. The inspection method of inserting a tester probe from the other side of connector significantly reduces the waterproof performance. Disconnect the connector by fully loosening the bolt. PREPARATION 1. Turn the ignition switch OFF. 2. Turn up the passenger side floor carpet. (See page EG–324) 3. Remove the ECM protector. 4. Disconnect the connector from the ECM. After completely loosening the bolt, the 2 parts of the connector can be separated. NOTICE: • Do not pull the wire harness when disconnecting the connector. • When disconnecting the connector, the ECM's back–up power source is cut off, so the malfunction codes, etc. recorded in the ECM memory are cancelled. • Never insert a tester probe or male terminal used for inspection purposes into the female terminal of the vehicle wire harness. Otherwise, the female terminal may be widened, which can result in faulty connection. 5. Connect SST (check harness "A") between the ECM and connector of the vehicle wire harness. SST 09990–01000 HINT: The arrangement of the check connector terminals are the same as those of the ECM. See page EG–511. 6. Disconnect the SST. SST 09990–01000 7. Reconnect the connector to the ECM. (a) Match the male connector correctly with the female connector, then press them together. (b) Tighten the bolt. Make sure the connector is completely connected by tightening the bolt until there is a clearance of less than 1 mm (0.04 in.) between the bottom of the male connector and the end of the female connector. 8. Install the ECM protector and floor carpet. ECM P12032 SST ECM Fi6451 Before connection After connection Female Connector Bolt Collar Stopper Nut Male Connector Fi6522 less than 1 mm (0.04 in.) Fi6523