Honda Civic manuals

Subaru Legacy Service Manual: Dtc u0208 lost communication with seat memory

DTC DETECTING CONDITION:

No data is received from power seat CM.

TROUBLE SYMPTOM:

The power seat does not operate normally.

WIRING DIAGRAM:

NOTE:

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

Power seat system Power Seat System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK DTC.

Read the DTC of body integrated unit using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)

Is DTC U0208 displayed- (Current malfunction)

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

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.

2.CHECK DTC.

1) Turn the ignition switch to OFF.

2) Disconnect the power seat CM connector and the body integrated unit connector.

3) Connect the disconnected connectors.

4) Using the Subaru Select Monitor, read DTC of CAN system. Read Diagnostic Trouble Code (DTC)

Is DTC U0208 displayed- (Current malfunction)

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

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.

3.CHECK HARNESS.

1) Turn the ignition switch to OFF.

2) Disconnect the power seat CM connector and the body integrated unit connector.

3) Using the tester, measure the resistance between terminals.

Connector & terminal

(R155) No. 12 — (i81) No. 18:

(R156) No. 12 — Chassis ground:

(R156) No. 14 — Chassis ground:

Is the resistance less than 10 --

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

Repair the open circuit of harness.

4.CHECK HARNESS.

1) Disconnect the power rear gate CM connector. (With power rear gate)

2) Disconnect the sunroof unit connector. (With sunroof)

3) Using the tester, measure the resistance between terminals.

Connector & terminal

(R155) No. 12 — Chassis ground:

Is the resistance 10 k- or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

Repair the shorted portion of harness.

5.CHECK HARNESS.

1) Turn the ignition switch to ON.

2) Using the tester, measure the voltage between terminals.

Connector & terminal

(R155) No. 12 (+) — Chassis ground (−):

Is the voltage less than 1 V-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

Repair the shorted portion of harness.

6.CHECK HARNESS.

1) Turn the ignition switch to ON.

2) Using the tester, measure the voltage between terminals.

Connector & terminal

(R155) No. 10 (+) — Chassis ground (−):

(R155) No. 11 (+) — Chassis ground (−):

(R156) No. 3 (+) — Chassis ground (−):

(R156) No. 8 (+) — Chassis ground (−):

Is the voltage 9 V or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

Repair the open circuit of harness.

7.CHECK CONTROL MODULE.

1) Turn the ignition switch to OFF.

2) Replace the sunroof unit with a properly functioning part. Sunroof Motor

3) Read the DTC of body integrated unit using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)

Is DTC U0208 displayed- (Current malfunction)

Replace the body integrated unit. Body Integrated Unit

For models without power rear gate and without sunroof, malfunction occurred in the power seat CM. For models with power rear gate or with sunroof, Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

8.CHECK CONTROL MODULE.

NOTE:

For models without power rear gate, Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

1) Connect the power rear gate CM connector.

2) Read the DTC of body integrated unit using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)

Is DTC U0208 displayed- (Current malfunction)

Replace the power rear gate CM. Power Rear Gate Control Module

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0208 LOST COMMUNICATION WITH SEAT MEMORY

9.CHECK CONTROL MODULE.

1) Connect the sunroof unit connector.

2) Read the DTC of body integrated unit using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)

Is DTC U0170 displayed- (Current malfunction)

Malfunction occurred in the sunroof unit.

Malfunction occurred in the power seat CM.

Dtc u0230 lost communication with power rear gate control module
DTC DETECTING CONDITION:No data is received from the power rear gate CM.TROUBLE SYMPTOM:The power rear gate does not operate normally.WIRING DIAGRAM:NOTE:For the coupling connector, refer to “WI ...

Dtc u1500 keyless uart com. Malfunction
1. WITHOUT KEYLESS ACCESS WITH PUSH BUTTON START SYSTEMDTC DETECTING CONDITION:• UART between the TPMS & keyless entry CM and the body integrated unit is open or shorted, or has communication fa ...

Other materials:

Dtc b2a0c dcm internal fault
DIAGNOSIS START CONDITION:When ignition switch is ON.DTC DETECTING CONDITION:• Main microcomputer and communication circuit IC cannot communicate. (Defective IPC)• SIM (communication chip) cannot be read. (Defective SIM)TROUBLE SYMPTOM:• Telematics function cannot be used.• R ...

© 2017-2019 Copyright www.sulegacy.com