Section 4TROUBLESHOOTINGTM 9-2320-363-20-1CHARTSE. ENG5V=ENGINE HARNESS +5 VOLT SUPPLYNOTE — This chart is only to be used if:1) All basic mechanical checks and physical inspections have been performed with no problem found, and2) Diagnosis of DDEC-11 was started at step Start-1 (page 3-121) and you have now been referred here.ENG5V-1 Check for LowBattery Voltagel Was there also a Code 46?ENG5V-2 Check for +5 Voltsl Turn ignition off.l Disconnect the Oil Pressure Sensor(OFS) and Turbo Boost Sensor(TBS) connectors.l Turn ignition on.l Ateach sensor harness connector,read voltage between socket Cand socket A.ENG5V=3 Check ECMLConnectorsl Check terminals at the ECM engineharness connector (both the ECMand harness side) for damaged,bent, corroded and unseated pinsor sockets.RESULTWHAT TO DO NEXTYes.-Go to 46-I, page 3-301.No,*Go to ENG5V-2.Between 4.7-Voltage reading is correct. Checkand 5.2 voltsvoltage at next connector. If allconnector voltage readings arecorrect, go to ENG5V-3.Greater than*Go to ENG5V-6.5.2 voltsat all connectors.Terminals andconnectors are okay.Then go to ENG5V-30.Problem found.- Repair terminals/connectors,page 3-2. Then go to ENG5V-30.3-333
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