Diagnostic Procedure with Cancel Code: 16

Detected when ignition switch is turned to OFF or malfunction related to the ignition switch occurs.

Trouble symptom: 

Cruise control cannot be set.

Wiring diagram: 

Cruise control system Ref. to WIRING SYSTEM>CRUISE CONTROL SYSTEM>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK IGNITION SWITCH CIRCUIT  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the ECM connector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>ENGINE CONTROL MODULE (ECM)
   3. Turn the ignition switch to ON.
   4. Measure the voltage between ECM connector and chassis ground.

      Connector & terminal 

      (B61) No. 54 (+) - Chassis ground (-):

   Is the voltage 10 V or more?

   Yes  : Check for poor contact of ECM connector.

   No  :

   • Check the fuse No. 7 (main fuse box). Ref. to WIRING SYSTEM>CRUISE CONTROL SYSTEM>WIRING DIAGRAM
   • Check the harness for open or short circuit between ignition switch and ECM.