DESCRIPTION
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
U0208 |
There is no communication from the front power seat switch LH. |
|
HINT:
For vehicles with a seat position memory only.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
PROCEDURE
1. |
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTICE:
|
2. |
CHECK FOR OPEN IN CAN BUS WIRE (FRONT POWER SEAT SWITCH LH BRANCH WIRE) |
(a) Disconnect the b19 front power seat switch LH connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
b19-8 (CANP) - b19-7 (CANN) |
Ignition switch off |
54 to 69 Ω |
*a |
Rear view of wire harness connector (to Front Power Seat Switch LH) |
NG |
REPAIR OR REPLACE FRONT POWER SEAT SWITCH LH CAN BRANCH WIRE OR CONNECTOR (CANP, CANN) |
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BATTERY AND BODY GROUND) |
(a) Connect the cable to the negative (-) battery terminal. NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ). |
|
(b) Disconnect the b18 front power seat switch LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
b18-2 (GND1) - Body ground |
Always |
Below 1 Ω |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
b18-7 (+B1) - Body ground |
Always |
11 to 14 V |
b19-12 (SYSB) - Body ground |
Always |
11 to 14 V |
*a |
Rear view of wire harness connector (to Front Power Seat Switch LH) |
OK |
REPLACE FRONT POWER SEAT SWITCH LH |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
System Description
SYSTEM DESCRIPTION
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