DTC B2282: Vehicle Speed Signal Correlation

DTC detecting condition:

When any of the following conditions is established with ignition switch ON.

The status continues for 20 seconds where a vehicle speed signal on direct line is less than 5 km/h (3 MPH) and a vehicle speed signal on CAN is 25 km/h (16 MPH) or more.
The status continues for 20 seconds where a vehicle speed signal on direct line is 25 km/h (16 MPH) or more and a vehicle speed signal on CAN is less than 5 km/h (3 MPH).
Wiring diagram:
Keyless access with push button start system Ref. to WIRING SYSTEM>KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM>WIRING DIAGRAM .
Vehicle dynamics control system Ref. to WIRING SYSTEM>VEHICLE DYNAMICS CONTROL SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CAUTION:

For replacement procedure of keyless access Control Module, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

Is the check result OK?

Yes : Go to 2.

No : Perform the inspection according to the diagnosis for LAN system.
CHECK COMBINATION METER.
Check that the speedometer is displayed normally.

Is the meter display normal?

Yes : Go to 3.

No : Check the VDC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
CHECK DATA MONITOR.
Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>DATA MONITOR .
- Vehicle speed signal
Is the display normal according to the parked state or driving state?

Yes : Even if DTC is displayed, the circuit has returned to a normal condition at this time.

Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

No : Go to 4.
CHECK HARNESS (OPEN CIRCUIT).
1. Disconnect the keyless access Control Module connector.
2. Disconnect the combination meter connector.
3. Using a tester, measure the resistance between the keyless access Control Module connector and VDC Control Module connector.
  Connector and terminal
  
  (i75) No. 7 - (B310) No. 28:
Is the resistance less than 1 Ω?

Yes : Go to 5.

No : Repair or replace the open circuit of harness.
CHECK HARNESS (OPEN CIRCUIT).
Using a tester, measure the resistance between the keyless access Control Module connector and chassis ground.

Connector and terminal

(i75) No. 7 - Chassis ground:

Is the resistance 30 kΩ or more?

Yes : Go to 6.

No : Repair or replace the short circuit of the harness.
CHECK KEYLESS ACCESS CONTROL MODULE.
1. Connect each connector.
2. Using an oscilloscope, measure the waveform between the keyless access Control Module connector and chassis ground.
  Connector and terminal
  
  (i75) No. 7 - Chassis ground:
Is 3.54 Hz displayed when the vehicle is driven approx. at 5 km/h (3 MPH)? Or does the value change from 3.54 Hz when the vehicle stops?

Yes : Replace the keyless access Control Module. Ref. to SECURITY AND LOCKS>KEYLESS ACCESS CONTROL MODULE .

No : Check the VDC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .