Subaru Crosstrek Service Manual: Dtc b2784 antenna circuit (push engine switch)

DTC detecting condition:

When open or short circuit occurs in the antenna coil.

Trouble symptom:

The keyless access function may not be operable.

CAUTION:

For replacement procedure of keyless access CM and steering lock CM, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

1.CHECK STEERING LOCK CM.

1) Disconnect the push button ignition switch connector.

2) Disconnect the keyless access CM connector.

3) Using the tester, measure the resistance between terminals.

Connector & terminal

(i150) No. 14 — (B574) No. 1:
(i150) No. 9 — (B574) No. 9:
(i150) No. 10 — (B574) No. 7:
(i150) No. 8 — (B574) No. 24:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2784 ANTENNA CIRCUIT (PUSH ENGINE SWITCH)">Go to Step 2.

Repair or replace the open circuit of harness.

2.CHECK HARNESS.

Using the tester, measure the resistance between terminals.

Connector & terminal

(i150) No. 14 — Chassis ground:
(i150) No. 9 — Chassis ground:
(i150) No. 10 — Chassis ground:

Is the resistance 10 k? or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2784 ANTENNA CIRCUIT (PUSH ENGINE SWITCH)">Go to Step 3.

Repair or replace the short circuit of the harness.

3.CHECK PUSH BUTTON IGNITION SWITCH.

1) Replace the push button ignition switch. Push Button Ignition Switch">

2) Using the Subaru Select Monitor, clear the memory. Clear Memory Mode">

3) Read the DTC using the Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is DTC B2784 displayed?

Replace the keyless access CM. Keyless Access CM">

Malfunction occurred in the push button ignition switch.

Dtc b2782 steering lock drive request signal correlation

Dtc b2785 lin communication

Other materials:

Removal
SECURITY AND LOCKS > ReceiverREMOVALNOTE:Except for model with keyless entry1. Disconnect the ground cable from battery. NOTE">2. Remove the trim panel - rear apron LH. Rear Quarter Trim > REMOVAL">3. Remove the receiver assembly.(1) Disconnect the connector.(2) Remove the bo ...

Low tire pressure warning light (U.S.-spec. models)
When the ignition switch is turned to the "ON" position, the low tire pressure warning light will illuminate for approximately 2 seconds to check that the tire pressure monitoring system (TPMS) is functioning properly. If there is no problem and all tires are properly inflated, the light w ...

Basic diagnostic procedure Procedure
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Basic Diagnostic ProcedurePROCEDURECAUTION:• Subaru Select Monitor kit is required for reading DTC, performing diagnosis and reading current data.• Before removal or installation, be sure to remove any foreign matter (dust, ...