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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls - Engine (Diagnostics) (H4DOTC)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0546 Exhaust Gas Temperature Sensor Circuit High-Bank 1 >> Wiring Diagram:

Wiring Diagram:

WARNING: This page is about a different variant/trim than selected.
Fig 1: Wiring Diagram - DTC P0546 Exhaust Gas Temperature Sensor Circuit High-Bank 1
G03830030Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE (DTC P0546)

Step Check Yes No
1 
CHECK CURRENT DATA. 
  1. Start the engine.
  2. Read the data of exhaust gas temperature sensor signal using Subaru Select Monitor or OBD-II general scan tool.
NOTE:
  • Subaru Select Monitor

    For detailed operation procedure, refer to the "READ CURRENT DATA FOR ENGINE". < Ref. to , SUBARU SELECT MONITOR . >

  • OBD-II general scan tool

    For detailed operation procedures, refer to the OBD-II general scan tool instruction manual .

 Is the temperature less than 372°C (702°F)? Go to step 2. Repair the poor contact.
NOTE: In this case, repair the following:
  • Poor contact in exhaust gas temperature sensor
  • Poor contact in ECM
  • Poor contact in joint connector
2 
CHECK HARNESS BETWEEN EXHAUST GAS TEMPERATURE SENSOR AND ECM CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from exhaust gas temperature sensor.
  3. Measure the voltage between exhaust gas temperature sensor connector and engine ground.

    Connector & terminal 

    (B392) No. 1 (+) - Engine ground (-): 

 Is the voltage more than 10 V? Repair the battery short circuit in harness between ECM and exhaust gas temperature sensor connector. Go to step 3. 
3 
CHECK HARNESS BETWEEN EXHAUST GAS TEMPERATURE SENSOR AND ECM CONNECTOR. 
  1. Turn the ignition switch to ON.
  2. Measure the voltage between exhaust gas temperature sensor connector and engine ground.

    Connector & terminal 

    (B392) No. 1 (+) - Engine ground (-): 

 Is the voltage more than 10 V? Repair the battery short circuit in harness between ECM and exhaust gas temperature sensor connector. Go to step 4. 
4 
CHECK HARNESS BETWEEN EXHAUST GAS TEMPERATURE SENSOR AND ECM CONNECTOR. 
Measure the voltage between exhaust gas temperature sensor connector and engine ground.
Connector & terminal 
(B392) No. 1 (+) - Engine ground (-): 		 Is the voltage more than 4 V? Go to step 5.  Repair the harness and connector.
NOTE: In this case, repair the following:
  • Open circuit in harness between ECM and exhaust gas temperature sensor connector
  • Poor contact in exhaust gas temperature sensor connector
  • Poor contact in ECM connector
  • Poor contact in joint connector
5 
CHECK HARNESS BETWEEN EXHAUST GAS TEMPERATURE SENSOR AND ECM CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Measure the resistance of harness between exhaust gas temperature sensor connector and engine ground.

    Connector & terminal 

    (B392) No. 2 - Engine ground: 

 Is the resistance less than 5 ? Replace the exhaust gas temperature sensor.
< Ref. to EXHAUST TEMPERATURE SENSOR . >		 Repair the harness and connector.
NOTE: In this case, repair the following:
  • Open circuit in harness between ECM and exhaust gas temperature sensor connector
  • Poor contact in exhaust gas temperature sensor connector
  • Poor contact in ECM connector
  • Poor contact in joint connector
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