Subaru Crosstrek Service Manual: Dtc b2275 engine start request control circuit

DTC detecting condition:

• When malfunction is detected in engine start permission signal output circuit in the keyless access CM.

• When malfunction is detected in external engine start permission signal circuit.

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

1.CHECK LAN SYSTEM.

Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE">

Is LAN system normal?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">Go to Step 2.

Perform the inspection according to the diagnosis for LAN system.

2.CHECK FUSE.

Check the fuse. Relay and Fuse">

Is the fuse OK?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">Go to Step 3.

Replace the fuse. When the replaced fuse is blown immediately, check the power supply circuit for short-circuited.

3.CHECK HARNESS.

1) Disconnect the keyless access CM connector and ECM connector.

2) Using a tester, measure the resistance between the keyless access CM connector and ECM.

Connector & terminal

(B572) No. 7 — (B137) No. 17:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">Go to Step 4.

Repair or replace the open circuit of harness.

4.CHECK HARNESS.

Using a tester, measure the resistance between the keyless access CM connector and chassis ground.

Connector & terminal

(B572) No. 11 — Chassis ground:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">Go to Step 5.

Repair or replace the open circuit of harness.

5.CHECK HARNESS.

Using a tester, measure the resistance between the keyless access CM connector and chassis ground.

Connector & terminal

(B572) No. 7 — Chassis ground:

Is the resistance 10 k? or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">Go to Step 6.

Repair or replace the short circuit of the harness.

6.CHECK KEYLESS ACCESS CM.

1) Connect the keyless access CM connector and ECM connector.

2) Using a tester, measure the voltage between the terminals of keyless access CM connector.

Connector & terminal

(B572) No. 7 (+) — (B572) No. 11 (−):

Is the voltage 2 V or less > 9 V or more when the push button ignition switch is turned on while depressing the brake pedal with the shift position in P or N?

Perform inspection according to the diagnosis of engine. Basic Diagnostic Procedure > PROCEDURE">

Replace the keyless access CM. Keyless Access CM">

Dtc b2274 acc relay control circuit

Dtc b2276 acc relay off signal

Other materials:

Dtc b2781 steering lock cm control circuit
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2781 STEERING LOCK CM CONTROL CIRCUITDTC DETECTING CONDITION:• When malfunction is detected in lock/unlock position detection sensor.• When the open or short circui ...

Fastening the seatbelt
WARNING Never use a belt that is twisted or reversed. In an accident, this can increase the risk or severity of injury. Keep the lap belt as low as possible on your hips. In a collision, this spreads the force of the lap belt over stronger hip bones instead of across the weaker ...

Tire pressure monitoring system (TPMS) (U.S.-spec. models)
The tire pressure monitoring system (TPMS) in the Subaru Ascent is designed to continuously monitor tire pressure and alert the driver when one or more tires are significantly underinflated. This system enhances safety by helping to reduce the risk of tire-related incidents and ensuring op ...