Subaru Crosstrek Service Manual: Inspection

Subaru Crosstrek Service Manual / Security and locks / Door lock control system / Inspection

SECURITY AND LOCKS > Door Lock Control System

INSPECTION

1. SYMPTOM CHART

Symptoms	Repair order	Reference
The door lock control system does not operate.	1. Remove and visually inspect the following fuses.

• No. 3 (in fuse & relay box)

• No. 7 (in fuse & relay box)

• No. 8 (in main fuse box)

If the fuse is blown out, replace the fuse with a new part.

When there is no defective with the fuse, check the power supply and ground circuit. Door Lock Control System > INSPECTION">

2. Check the power supply and ground circuit for body integrated unit.

Door Lock Control System > INSPECTION">

3. Check the door lock switch and the circuit.

Door Lock Control System > INSPECTION">

4. Check the rear gate opener button and the circuit.

Door Lock Control System > INSPECTION">

5. Check the door lock actuator and the circuit.

Door Lock Control System > INSPECTION">

A specific door lock actuator does not operate.

Check the door lock actuator and circuit.

Door Lock Control System > INSPECTION">

2. CHECK POWER SUPPLY AND GROUND CIRCUIT

STEP	CHECK	YES	NO

1.CHECK POWER SUPPLY.

1) Disconnect the connector of body integrated unit.

2) Measure the voltage between the body integrated unit connector and chassis ground.

Connector & terminal

(i84) No. 6 (+) — Chassis ground (−):

(i171) No. 1 (+) — Chassis ground (−):

(B281) No. 7 (+) — Chassis ground (−):

Is the voltage 9 V or more?

Door Lock Control System > INSPECTION">Go to Step 2.

Check the harness for open or short circuit between body integrated unit and fuse.

2.CHECK GROUND CIRCUIT.

Measure the resistance between the body integrated unit connector and chassis ground.

Connector & terminal

(i84) No. 1 — Chassis ground:

(B280) No. 1 — Chassis ground:

Is the resistance less than 10 ??

The power supply and ground circuit are OK.

Repair or replace the harness.

3. CHECK DOOR LOCK SWITCH

STEP	CHECK	YES	NO

1.CHECK DATA MONITOR.

Using the Subaru Select Monitor, display the data of «Manual lock SW input».

NOTE:

For detailed operation procedures, refer to “Application help”.

Does the display switch between OFF ←> ON when each door lock switch is moved to LOCK?

Door Lock Control System > INSPECTION">Go to Step 2.

Door Lock Control System > INSPECTION">Go to Step 3.

2.CHECK DOOR LOCK SWITCH.

From the condition in step 1), operate each door lock switch (driver’s and passenger’s) in the UNLOCK direction.

Does the display switch between OFF ←> ON?

The door lock switch is OK.

Door Lock Control System > INSPECTION">Go to Step 4.

3.CHECK POWER WINDOW MAIN SWITCH (DOOR LOCK SWITCH).

1) Disconnect the power window main switch (door lock switch) connector.

2) Measure the continuity between terminals when moving the power window main switch (door lock switch) in LOCK direction.

Terminals

Driver’s side

No. 3 — No. 1:

Passenger’s side

No. 4 — No. 5:

Did the indicator change from “No continuity” (1 M? or more) to “Continuity exists” (less than 10 ?)?

Door Lock Control System > INSPECTION">Go to Step 4.

Replace the power window main switch or door lock switch.

4.CHECK POWER WINDOW MAIN SWITCH (DOOR LOCK SWITCH).

Measure the continuity between terminals when moving the power window main switch (door lock switch) in UNLOCK direction.

Terminals

Driver’s side

No. 9 — No. 1:

Passenger’s side

No. 2 — No. 5:

Did the indicator change from “No continuity” (1 M? or more) to “Continuity exists” (less than 10 ?)?

Door Lock Control System > INSPECTION">Go to Step 5.

Replace the power window main switch or door lock switch.

5.CHECK HARNESS.

Measure the resistance between the power window main switch (door lock switch) connector and chassis ground.

Connector & terminal

Driver’s side

(D7) No. 3 — Chassis ground:

Passenger’s side

(D125) No. 5 — Chassis ground:

Is the resistance less than 10 ??

Door Lock Control System > INSPECTION">Go to Step 6.

Repair or replace the harness.

6.CHECK HARNESS.

Check the harness between body integrated unit and power window main switch (door lock switch).

Connector & terminal

Driver’s side

(D7) No. 3 — (i84) No. 9:
(D7) No. 9 — (i84) No. 20:

Passenger’s side

(D125) No. 4 — (i84) No. 9:
(D125) No. 2 — (i84) No. 20:

Is harness normal?

Replace the body integrated unit. Body Integrated Unit">

Repair or replace the harness.

4. CHECK REAR GATE OPENER BUTTON CIRCUIT

STEP	CHECK	YES	NO

1.CHECK DATA MONITOR.

Using the Subaru Select Monitor, display the data of «R Gate Release SW input».

NOTE:

For detailed operation procedures, refer to “Application help”.

Does the display change to OFF ←> ON, when the rear gate opener button is operated?

Rear gate opener button is normal.

Door Lock Control System > INSPECTION">Go to Step 2.

2.CHECK HARNESS.

1) Disconnect the connectors of body integrated unit and rear gate opener button.

2) Check the harness between the body integrated unit and rear gate opener button.

Connector & terminal

(i84) No. 10 — (D47) No. 1:

Is harness normal?

Door Lock Control System > INSPECTION">Go to Step 3.

Repair or replace the harness.

3.CHECK HARNESS.

Measure the resistance between the rear gate opener button connector and chassis ground.

Connector & terminal

(D47) No. 2 — Chassis ground:

Is the resistance less than 10 ??

Door Lock Control System > INSPECTION">Go to Step 4.

Repair or replace the harness.

4.CHECK REAR GATE OPENER BUTTON.

Measure the resistance between terminals both when the rear gate opener button is pressed and when not pressed.

Terminals

No. 1 — No. 2:

Is the resistance less than 10 ? when the switch is pressed and 1 M? or more when not pressed?

Replace the body integrated unit. Body Integrated Unit">

Replace the rear gate opener button.

5. CHECK DOOR LOCK ACTUATOR AND CIRCUIT

STEP	CHECK	YES	NO

1.CHECK HARNESS (DOOR LOCK).

1) Disconnect the body integrated unit and each door lock actuator connector.

2) Check the harness between body integrated unit and each door lock actuator.

Connector & terminal

Front door LH

(i171) No. 2 — (D72) No. 4:

Front door RH

(i171) No. 2 — (D18) No. 4:

Rear door LH

(i171) No. 2 — (D26) No. 4:

Rear door RH

(i171) No. 2 — (D32) No. 4:

Is harness normal?

Door Lock Control System > INSPECTION">Go to Step 2.

Repair or replace the harness.

2.CHECK HARNESS (DOOR UNLOCK).

Check the harness between body integrated unit and each door lock actuator.

Connector & terminal

Front door LH

(i171) No. 4 — (D72) No. 1:

Front door RH

(i171) No. 3 — (D18) No. 1:

Rear door LH

(i171) No. 3 — (D26) No. 1:

Rear door RH

(i171) No. 3 — (D32) No. 1:

Is harness normal?

Door Lock Control System > INSPECTION">Go to Step 3.

Repair or replace the harness.

3.CHECK HARNESS (REAR GATE UNLOCK).

Check the harness between the body integrated unit and rear gate lock actuator.

Connector & terminal

(i171) No. 7 — (D46) No. 1:

Is harness normal?

Door Lock Control System > INSPECTION">Go to Step 4.

Repair or replace the harness.

4.CHECK HARNESS (REAR GATE UNLOCK).

Measure the resistance between the rear gate lock actuator connector and chassis ground.

Connector & terminal

(D46) No. 2 — Chassis ground:

Is the resistance less than 10 ??

Door Lock Control System > INSPECTION">Go to Step 5.

Repair or replace the harness.

5.CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL.

1) Connect the body integrated unit connector.

2) Measure the voltage between terminals of the body integrated unit when operating the door lock switch to LOCK direction.

Connector & terminal

Except for front door LH

(i171) No. 2 (+) — (i171) No. 3 (−):

Front door LH

(i171) No. 2 (+) — (i171) No. 4 (−):

Does the voltage change from less than 1 V > 9 V or more? (During lock output)

Door Lock Control System > INSPECTION">Go to Step 6.

Replace the body integrated unit. Body Integrated Unit">

6.CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL.

Measure the voltage between terminals of the body integrated unit when operating the door lock switch to UNLOCK direction.

Connector & terminal

Except for front door LH

(i171) No. 3 (+) — (i171) No. 2 (−):

Front door LH

(i171) No. 4 (+) — (i171) No. 2 (−):

Does the voltage change from less than 1 V > 9 V or more? (During unlock output)

Door Lock Control System > INSPECTION">Go to Step 7.

Replace the body integrated unit. Body Integrated Unit">

7.CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL.

Measure the voltage between body integrated unit and chassis ground when operating the rear gate opener button.

Connector & terminal

(i171) No. 7 (+) — Chassis ground (−):

Does the voltage change from less than 1 V > 9 V or more? (During unlock output)

Door Lock Control System > INSPECTION">Go to Step 8.

Replace the body integrated unit. Body Integrated Unit">

8.CHECK DOOR LOCK ACTUATOR.

Check the door lock actuator.

• Front door lock actuator: Front Door Latch and Door Lock Actuator Assembly > INSPECTION">

• Rear door lock actuator: Rear Door Latch and Door Lock Actuator Assembly > INSPECTION">

Is the door lock actuator OK?

Door Lock Control System > INSPECTION">Go to Step 9.

Replace the door latch and door lock actuator assembly.

9.CHECK REAR GATE LOCK ACTUATOR.

Check the rear gate lock actuator. Rear Gate Latch and Actuator Assembly">

Is the rear gate lock actuator normal?

Check the connection status of the harness and connector that may have a temporary poor contact.

Replace the rear gate latch and actuator assembly.

Wiring diagram

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