Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2524 touch sensor circuit/open

DTC DETECTING CONDITION:

When malfunction in the touch sensor is detected.

TROUBLE SYMPTOM:

The power rear gate does not operate.

WIRING DIAGRAM:

NOTE:

For the coupling connector, refer to “WIRING SYSTEM”.

Power rear gate system Power Rear Gate System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK TOUCH SENSOR.

1) Turn the ignition switch to OFF.

2) Disconnect the touch sensor (LWR) RH / (LWR) LH connectors.

3) Measure the resistance between the touch sensor (LWR) RH / (LWR) LH connectors.

Connector & terminal

(D108) No. 1 — (D108) No. 2:
(D107) No. 1 — (D107) No. 2:

Is the resistance 2 k- or less while the sensor is touched, and approx. 10 k- when not touched-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

2.CHECK TOUCH SENSOR (UPR).

1) Disconnect the touch sensor (UPR) RH / (UPR) LH connectors.

2) Measure the resistance between the touch sensor (UPR) RH / (UPR) LH connectors.

Connector & terminal

(D112) No. 1 — (D112) No. 2:
(D111) No. 1 — (D111) No. 2:

Is the resistance 2 k- or less while the sensor is touched, and approx. 10 k- when not touched-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Replace the touch sensor (UPR) RH / (UPR) LH. Power Rear Gate Touch Sensor

3.CHECK TOUCH SENSOR (LWR).

Measure the resistance between the touch sensor (LWR) RH / (LWR) LH connectors.

Connector & terminal

(D110) No. 1 — (D108) No. 1:
(D110) No. 2 — (D108) No. 2:
(D109) No. 1 — (D107) No. 1:
(D109) No. 2 — (D107) No. 2:

Is the resistance less than 10 --

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Replace the open sensor. Power Rear Gate Touch Sensor

4.CHECK TOUCH SENSOR (LWR).

Measure the resistance between the touch sensor (LWR) RH / (LWR) LH connectors.

Connector & terminal

(D109) No. 1 — (D107) No. 2:
(D109) No. 2 — (D107) No. 1:
(D110) No. 1 — (D108) No. 2:
(D110) No. 2 — (D108) No. 1:
(D109) No. 1 — Chassis ground:
(D109) No. 2 — Chassis ground:
(D110) No. 1 — Chassis ground:
(D110) No. 2 — Chassis ground:

Is the resistance 1 M- or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Repair or replace the short circuit to power supply of the harness.

5.CHECK CONNECTOR.

Check the connector of each sensor.

Is there poor contact of connector-

Replace the defective sensor. Power Rear Gate Touch Sensor

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.

6.CHECK HARNESS.

1) Disconnect the PRG CM connector in the order of (R423) > (R422).

2) Measure the resistance between PRG CM connector and touch sensor connector.

Connector & terminal

(R422) No. 1 — (D151) No. 1:
(R422) No. 9 — (D150) No. 2:
(D150) No. 1 — (D151) No. 2:

Is the resistance less than 10 --

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Repair or replace the open circuit of harness.

7.CHECK HARNESS (OPEN CIRCUIT).

Measure the resistance between PRG CM connector and touch sensor connector or chassis ground.

Connector & terminal

(R422) No. 1 — (D151) No. 2:
(R422) No. 9 — (D151) No. 2:
(R422) No. 1 — (R422) No. 9:
(R422) No. 1 — Chassis ground:
(R422) No. 9 — Chassis ground:
(D150) No. 1 — Chassis ground:

Is the resistance 1 M- or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2524 TOUCH SENSOR CIRCUIT/OPEN

Repair or replace the short circuit of the harness.

8.CHECK CONNECTOR.

Check each connector.

Is there poor contact of connector-

Replace the defective sensor or module.

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.

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