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Check Ignition Switch Circuit

STEP CHECK SHEET

Step Check Yes No
1. CHECK IGNITION SWITCH VOLTAGE. 
  1. Connect the Subaru Select Monitor to data link connector.
  2. Turn the ignition switch to ON.
  3. Select {body integrated module} from main menu.
  4. Select {Current Data Display & Save}.
  5. Check the {BATT voltage} and {IG power supply voltage}.
 Is the {IG power supply voltage} within +/-1 V against {BATT voltage}? The ignition switch input circuit is OK. Go to step 2. 
2. CHECK IGNITION SWITCH CIRCUIT. 
  1. Turn the ignition switch to OFF.
  2. Disconnect harness connector of body integrated unit.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between the harness connector terminal and chassis ground.

Connector & terminal 

(i84) No. 1 (+) - Chassis ground (-): 

 Is the voltage more than 10 V? Check the body integrated unit. < Ref. to , BASIC DIAGNOSTIC PROCEDURE . > Check harness for open or short circuit between body integrated unit and fuse.
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