Subaru Outback manuals

Subaru Outback: Basic Diagnostic Procedure

A: PROCEDURE

CAUTION:

NOTE:

Subaru Outback. LAN System (Diagnostics)

Check List for Interview

A: CHECK

Inspect the following item about the vehicle's state.

1. DISPLAY STATUS IN THE COMBINATION METER

Subaru Outback. LAN System (Diagnostics)

2. CONDITIONS UNDER WHICH TROUBLE OCCURS

Subaru Outback. LAN System (Diagnostics)

General Description

A: CAUTION

1. SUPPLEMENTAL RESTRAINT SYSTEM "AIRBAG"

Airbag system wiring harness is routed near the body integrated unit and twisted pair line.

CAUTION:

2. LAN SYSTEM

Subaru Outback. LAN System (Diagnostics)

  1. Bypass wire connection

Subaru Outback. LAN System (Diagnostics)

  1. Soldering and protection with insulating tape

B: INSPECTION

Before performing diagnostics, check the following item which might affect body integrated unit malfunctions.

1) Measure the battery voltage and check electrolyte.

Standard voltage: 12 V or more
Specific gravity: 1.260 or more

2) Check the fuse condition.

Make sure that ampere of the fuse is setting value, and it is not blown out.

3) Check the connecting condition of harness and harness connector.

4) Confirm settings of body integrated unit are corresponded to vehicle equipment. <Ref. to BC(diag)- 18, OPERATION, Registration Body Integrated Unit.>

5) Make sure that the User Customizing of the body integrated unit matches the vehicle equipment.

<Ref. to BC(diag)-16, OPERATION, User Customizing.>

6) Confirm "Factory initial setting" of body integrated unit registrations is set to "Market".

7) Confirm key illumination does not blink with ignition switch turned to ON.

C: PREPARATION TOOL

1. SPECIAL TOOL

Subaru Outback. LAN System (Diagnostics)

2. GENERAL TOOL

Subaru Outback. LAN System (Diagnostics)

Electrical Component Location

A: LOCATION

Subaru Outback. LAN System (Diagnostics)

  1. ABSCM&H/U or VDCCM&H/U (inside engine room)
  2. Electronic parking CM
  3. Body integrated unit
  4. Transmission control module (AT)
  5. Engine control module
  6. Data link connector
  7. Combination meter
  8. A/C CM
  9. Steering angle sensor
  10. Security CM

Subaru Outback. LAN System (Diagnostics)

Control Module I/O Signal

A: ELECTRICAL SPECIFICATION

For I/O signals of the body integrated unit, refer to Body Control (Diagnostics). <Ref. to BC(diag)-7, Control Module I/O Signal.>

For I/O signals of ECM, refer to Engine (Diagnostics). <Ref. to EN(H4SO)(diag)-17, Engine Control Module (ECM) I/O Signal.> <Ref. to EN(H4DOTC)(diag)-18, Engine Control Module (ECM) I/O Signal.> <Ref. to EN(H6DO)(diag)-18, Engine Control Module (ECM) I/O Signal.>

For I/O signals of TCM, refer to Automatic Transmission (Diagnostics). <Ref. to 5AT(diag)-13, Transmission Control Module (TCM) I/O Signal.> <Ref. to CVT(diag)-11, Transmission Control Module (TCM) I/O Signal.>

For I/O signals of VDC CM, refer to Vehicle Dynamics Control (Diagnostics). <Ref. to VDC(diag)-12, Control Module I/O Signal.>

For I/O signals of electronic CM, refer to Parking Brake (Diagnostics). <Ref. to PB(diag)-12, Control Module I/O Signal.>

For unit I/O signals of A/C CM, refer to HVAC System (Diagnostics). <Ref. to AC(diag)-6, Control Module I/ O Signal.>

For I/O signals of combination meter, refer to Combination Meter System. <Ref. to WI-98, WIRING DIAGRAM, Combination Meter System.>

For I/O signals of data link connector, refer to Engine (Diagnostics). <Ref. to EN(H4SO)(diag)-27, Data Link Connector.> <Ref. to EN(H4DOTC)(diag)-29, Data Link Connector.> <Ref. to EN(H6DO)(diag)-28, Data Link Connector.>

* CAN sleep state: Hold on for approx. one minute with ignition OFF and the doors, trunk, rear gate all closed.

B: WIRING DIAGRAM

<Ref. to WI-85, WIRING DIAGRAM, CAN Communication System.>

Subaru Select Monitor

A: OPERATION

For details of basic operations, refer to "PC application help for Subaru Select Monitor".

Read Diagnostic Trouble Code (DTC)

A: OPERATION

For details of operation procedures, refer to "PC application help for Subaru Select Monitor".

Clear Memory Mode

A: OPERATION

For details of operation procedures, refer to "PC application help for Subaru Select Monitor".

CAN Communication Circuit Check

A: PROCEDURE

NOTE: When measuring the resistance of CAN communication circuit, measure it in sleep status.

To enter sleep status

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

B: LIST

Subaru Outback. LAN System (Diagnostics)

C: INSPECTION

1. GROUND SHORT INSPECTION

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: Main wiring harness or related lines may be shorted to ground, or shorted to ground in one of the control modules.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

2. BATTERY SHORT INSPECTION

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: Main wiring harness or related lines may be shorted to battery circuit, or shorted to battery circuit in one of the control modules.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

3. 56 - 64 Ω

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: When the measured resistance value is 56 - 64 Ω, main wiring harness or related lines may be shorted to ground, or shorted to power supply line, or related line may be open.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

4. 55 Ω OR LESS

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: When the bus line is measured, combined resistance of end resistance (120 Ω) in ECM and end resistance (120 Ω) in VDC CM can be measured. The combined resistance is approximately 56 - 64 Ω. When the measured resistance value is 55 Ω or less, main wiring harness or related lines may be shorted, or combined resistance may have changed because resistance other than end resistance is created on the circuit.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

5. 65 Ω OR MORE

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: When CAN communication circuit is measured, combined resistance of end resistance (120 Ω) in ECM and end resistance (120 Ω) in VDC CM can be measured. The combined resistance is approximately 56 - 64 Ω.

When the measured resistance value is 65 Ω or more, either of end resistance or main wiring harness may have malfunction such as open circuit.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

6. 56 - 64 Ω (TCM)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

NOTE: Perform inspection when no data is received, or faulty is detected. This is different from power supply shorted or ground shorted.

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

7. RELATED LINES 56 - 64 Ω (STEERING ANGLE SENSOR)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

8. 56 - 64 Ω (A/C CM)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

9. 56 - 64 Ω (ELECTRONIC PARKING CM)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

10.56 - 64 Ω (COMBINATION METER)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

11.56 - 64 Ω (SECURITY CM)

WIRING DIAGRAM:

Subaru Outback. LAN System (Diagnostics)

Subaru Outback. LAN System (Diagnostics)

READ NEXT:

 List of Diagnostic Trouble Code (DTC)

A: LIST 1. DTC TABLE NOTE: When more than one DTC codes are recorded, referring to their combination and indicator display in the combination meter will make it easy to identify the possible cause.

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 Basic Diagnostic Procedure

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