Subaru Crosstrek Service Manual: Inspection

1. SYMPTOM CHART

• No. 3 (in fuse & relay box)

• No. 7 (in fuse & relay box)

• No. 8 (in main fuse box)

If the door lock control system does not operate when using the door lock switch, check the door lock control system. Door Lock Control System > INSPECTION">

Be sure to reset keyless transmitter of other vehicles registered to the inspection target vehicle, and vehicles to which keyless transmitters were registered for inspection, to the condition before performing the inspection. (Re-register the keyless transmitters.)

1.CHECK KEYLESS TRANSMITTER BATTERY.

1) Remove the battery from the keyless transmitter. Keyless Transmitter > REMOVAL">

2) Check the battery voltage. Keyless Transmitter > INSPECTION">

Is the voltage 2.5 V or more?

Keyless Entry System > INSPECTION">Go to Step 2.

Replace the keyless transmitter battery.

2.CHECK KEYLESS TRANSMITTER.

Register the keyless transmitter which operates normally on other vehicles to the inspection target vehicle. Keyless Transmitter > REPLACEMENT">

1) Close all the doors and rear gate of inspection target vehicle.

2) Using the keyless transmitter, lock and unlock the doors and rear gate of vehicle.

Can the check vehicle be locked and unlocked properly?

Keyless Entry System > INSPECTION">Go to Step 3.

Due to vehicle malfunction, continue the keyless entry system diagnosis.

3.CHECK KEYLESS TRANSMITTER.

Register the keyless transmitter of the inspected vehicle to another vehicle whose keyless system operates normally. Keyless Transmitter > REPLACEMENT">

Is the keyless transmitter registered correctly?

Keyless Entry System > INSPECTION">Go to Step 4.

Replace the keyless transmitter and perform registration.

4.CHECK KEYLESS TRANSMITTER.

Check the registered keyless transmitter.

1) Close all the doors and rear gate of the vehicle which keyless system operates normally.

2) Using the keyless transmitter, lock and unlock the doors and rear gate of vehicle.

Does the vehicle operate lock and unlock normally?

Keyless transmitter is OK.

Replace the keyless transmitter and perform registration.

1.CHECK BODY INTEGRATED UNIT.

Read the DTC using Subaru Select Monitor.

NOTE:

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

Is DTC B1500 “KEYLESS UART COM. MALFUNCTION” displayed?

Keyless Entry System > INSPECTION">Go to Step 2.

Keyless entry control module is normal.

2.CHECK POWER SUPPLY.

1) Disconnect the keyless entry control module connector.

2) Measure the voltage between keyless entry control module connector and chassis ground.

Connector & terminal

Model without tire pressure monitoring system

(R80) No. 4 (+) — Chassis ground (−):

Model with tire pressure monitoring system

(R221) No. 6 (+) — Chassis ground (−):
(R221) No. 4 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Keyless Entry System > INSPECTION">Go to Step 3.

Check the harness for open or short circuits between the keyless entry control module and the fuse.

3.CHECK GROUND CIRCUIT.

Measure the resistance between keyless entry control module connector and chassis ground.

Connector & terminal

Model without tire pressure monitoring system

(R80) No. 7 — Chassis ground:

Model with tire pressure monitoring system

(R221) No. 5 — Chassis ground:

Is the resistance less than 10 ??

Keyless Entry System > INSPECTION">Go to Step 4.

Repair or replace the harness.

4.CHECK KEYLESS ENTRY CONTROL MODULE CIRCUIT.

1) Disconnect the body integrated unit connector.

2) Check the harness between keyless entry control module and body integrated unit.

Connector & terminal

Model without tire pressure monitoring system

(i171) No. 11 — (R80) No. 3:

Model with tire pressure monitoring system

(i171) No. 11 — (R221) No. 11:

Is harness normal?

Replace the keyless entry control module.

Repair or replace the harness.

1.CHECK DATA MONITOR.

Display the following items using Subaru Select Monitor.

• «Driver’s door SW input»

• «P-door SW input»

• «Rear right door SW input»

• «Rear left door SW input»

• «R Gate SW input»

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

Does the display switch between OFF ←> ON when each door or rear gate is opened/closed?

The door switch or the rear gate latch switch is normal.

Keyless Entry System > INSPECTION">Go to Step 2.

2.CHECK HARNESS.

1) Disconnect the connector of body integrated unit.

2) Disconnect the connector of the door switch or the rear gate latch switch that the display does not change.

3) Check the harness between body integrated unit and defective switch.

Connector & terminal

Front door LH

(i84) No. 14 — (R9) No. 1:

Front door RH

(i84) No. 13 — (R12) No. 1:

Rear door LH

(i84) No. 24 — (R22) No. 1:

Rear door RH

(i84) No. 25 — (R16) No. 1:

Rear gate

(i84) No. 33 — (D46) No. 3:

Is harness normal?

Keyless Entry System > INSPECTION">Go to Step 3.

Repair or replace the harness.

3.CHECK HARNESS.

Measure the resistance between the faulty switch connector and chassis ground.

Connector & terminal

Front door LH

(R9) No. 3 — Chassis ground:

Front door RH

(R12) No. 3 — Chassis ground:

Rear door LH

(R22) No. 3 — Chassis ground:

Rear door RH

(R16) No. 3 — Chassis ground:

Rear gate

(D46) No. 4 — Chassis ground:

Is the resistance less than 10 ??

Keyless Entry System > INSPECTION">Go to Step 4.

Repair or replace the harness.

4.CHECK DOOR SWITCH.

Measure the resistance between faulty switch terminals.

Terminals

Front LH door switch

No. 1 — No. 3:

Front RH door switch

No. 1 — No. 3:

Rear LH door switch

No. 1 — No. 3:

Rear RH door switch

No. 1 — No. 3:

Rear gate latch switch

No. 3 — No. 4:

Is the resistance 1 M? or more when the door switch is pushed, or the rear gate is closed?

Replace the body integrated unit. Body Integrated Unit">

Replace the faulty parts.

• Door switches

• Rear gate latch and actuator assembly

1.CHECK DATA MONITOR.

Using the Subaru Select Monitor, display the data of «key-lock warning SW».

NOTE:

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

Is the normal input signal displayed when the key is inserted in/removed from the ignition switch?

The key warning switch is OK.

Keyless Entry System > INSPECTION">Go to Step 2.

2.CHECK FUSE.

Remove and visually check fuse No. 14 (in the main fuse box).

Is the fuse blown out?

Replace the fuse with a new part.

Keyless Entry System > INSPECTION">Go to Step 3.

3.CHECK KEY WARNING SWITCH CIRCUIT.

1) Disconnect the connector of body integrated unit.

2) Insert the key into ignition switch. (LOCK position)

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

Connector & terminal

(B280) No. 4 (+) — Chassis ground (−):

Is the voltage 9 V or more?

Keyless Entry System > INSPECTION">Go to Step 4.

Keyless Entry System > INSPECTION">Go to Step 5.

4.CHECK KEY WARNING SWITCH CIRCUIT.

1) Remove the key from ignition switch.

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

Connector & terminal

(B280) No. 4 (+) — Chassis ground (−):

Is the voltage less than 1.5 V?

The key warning switch is OK.

Keyless Entry System > INSPECTION">Go to Step 5.

5.CHECK KEY WARNING SWITCH.

1) Disconnect the connector of key warning switch.

2) Insert the key into ignition switch. (LOCK position)

3) Measure the resistance between key warning switch terminals.

Terminals

No. 1 — No. 2:

Is the resistance less than 1 ??

Keyless Entry System > INSPECTION">Go to Step 6.

Replace the key warning switch.

6.CHECK KEY WARNING SWITCH.

1) Remove the key from ignition switch.

2) Measure the resistance between key warning switch terminals.

Terminals

No. 1 — No. 2:

Is the resistance 1 M? or more?

Check the following:

• Harness for open circuits and shorts between the key warning switch and fuse.

• Harness for open or short between the body integrated unit and key warning switch.

Replace the key warning switch.

1.CHECK ROOM LIGHT OPERATION.

Make sure the room light illuminates when the room light switch is ON, and goes off when the switch is OFF.

Does the room light illuminate or go off?

Keyless Entry System > INSPECTION">Go to Step 2.

Check the room light circuit. Room Light > INSPECTION">

2.CHECK ROOM LIGHT OPERATION.

1) Turn the room light switch to the “DOOR” position.

2) Open and close any door.

Does the room light illuminate ←> go off (including off delay) when the door is opened and closed?

Keyless Entry System > INSPECTION">Go to Step 3.

Keyless Entry System > INSPECTION">Go to Step 4.

3.CHECK KEYLESS ENTRY OPERATION.

Press the LOCK/UNLOCK button of the keyless transmitter.

Does it operate properly?

Room light is normal.

Check keyless entry system. Keyless Entry System > INSPECTION">

4.CHECK ROOM LIGHT.

Check the room light. Room Light > INSPECTION">

Is room light normal?

Keyless Entry System > INSPECTION">Go to Step 5.

Replace the bulb or room light assembly.

5.CHECK HARNESS.

1) Disconnect the connectors of body integrated unit and room light.

2) Check the harness between body integrated unit and room light.

Connector & terminal

(i84) No. 4 — (R52) No. 2:

Is harness normal?

Keyless Entry System > INSPECTION">Go to Step 6.

Repair or replace the harness.

6.CHECK HARNESS.

Measure the voltage between the room light connector and chassis ground.

Connector & terminal

(R52) No. 3 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Replace the body integrated unit. Body Integrated Unit">

Repair or replace the harness.

1.CHECK HAZARD LIGHT OPERATION.

Make sure the hazard light blinks when hazard switch is turned to ON.

Does the hazard light blink?

Keyless Entry System > INSPECTION">Go to Step 2.

Check the hazard light circuit.

2.CHECK BODY INTEGRATED UNIT SETTING.

Display the data of «Abnormal warning lamp flashing setting» using Subaru Select Monitor.

NOTE:

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

Is the setting ON?

Keyless Entry System > INSPECTION">Go to Step 3.

Turn the setting to ON.

3.CHECK DATA MONITOR.

Display the data of «Hazard Output» using Subaru Select Monitor.

Is output signal present when operating the transmitter LOCK/UNLOCK button?

Keyless Entry System > INSPECTION">Go to Step 4.

Keyless Entry System > INSPECTION">Go to Step 5.

4.CHECK KEYLESS ENTRY OPERATION.

Press the LOCK/UNLOCK button of the keyless transmitter.

Does it operate properly?

Replace the body integrated unit. Body Integrated Unit">

Check keyless entry system. Keyless Entry System > INSPECTION">