Subaru Legacy BN/BS (2015-2019) Service Manual: 16

Subaru Legacy BN/BS (2015-2019) Service Manual / Cruise control system (diagnostics) / 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 Cruise Control System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK IGNITION SWITCH CIRCUIT. 1) Turn the ignition switch to OFF. 2) Disconnect the ECM harness connector. 3) Turn the ignition switch to ON. 4) Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B134) No. A2 (+) — Chassis ground (−):	Is the voltage 10 V or more-	Check for poor contact of ECM connector.	• Check fuse No. 5 (in fuse & relay box). • Check the harness for open or short circuit between ignition switch and ECM.

21

Cruise control command switch malfunction is detected.TROUBLE SYMPTOM:• Cruise control cannot be set. (Cancelled immediately.)• Cruise control cannot be released.Refer to DTC 11 for diagno ...

15

Detected when CANCEL switch is pressed or malfunction related to CRUISE switch occurs.TROUBLE SYMPTOM:• Cruise control cannot be set. (Cancelled immediately.)• Cruise control cannot be rel ...

Other materials:

Dtc b1872 short in front seat cushion airbag rh (to ground)
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:GND short circuit failure (shorted to ground in main harness, shorted to ground in front seat side airbag RH, shorted to ground in airbag CM internal circuit)CAUTION:Before performing diagnosis, refer to “CAUTIO ...