CAN Communication System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U0210: Lost Communication with "Seat Control Module C"
U0210 - Lost Communication with "Seat Control Module C"

DESCRIPTION





HINT
For vehicles with rear power seat control system or seat heater system.

WIRING DIAGRAM









INSPECTION PROCEDURE

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 the branch wire.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

NOTICE:
* w/ Navigation System (for HDD):
After the power switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the power switch off, be sure to wait for the time specified in the table before disconnecting the cable from the negative (-) battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal:





* When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

NEXT -- Continue to next step.

2. CHECK FOR OPEN IN CAN BUS WIRE (REAR POWER SEAT MODULE SWITCH BRANCH WIRE)

(a) Disconnect the z54*1 or S15*2 rear power seat module switch connector.





HINT
*1: except 4-passenger with Ottoman

*2: for 4-passenger with Ottoman

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:

except 4-passenger with Ottoman





for 4-passenger with Ottoman





NG -- REPAIR OR REPLACE REAR POWER SEAT MODULE SWITCH BRANCH WIRE OR CONNECTOR (CANP, CANN)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (REAR POWER SEAT MODULE SWITCH - 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 Repair Instruction - Initialization.

(b) Disconnect the z54*1 or S15*2 rear power seat module switch connector.





HINT
*1: except 4-passenger with Ottoman

*2: for 4-passenger with Ottoman

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:

except 4-passenger with Ottoman





for 4-passenger with Ottoman





(d) Measure the voltage according to the value(s) in the table below.

Standard voltage:

except 4-passenger with Ottoman





for 4-passenger with Ottoman





Result





E -- REPAIR OR REPLACE HARNESS OR CONNECTOR

D -- REPLACE REAR POWER SEAT MODULE SWITCH Disassembly

C -- REPLACE REAR POWER SEAT MODULE SWITCH Disassembly

B -- REPLACE REAR POWER SEAT MODULE SWITCH Disassembly

A -- REPLACE REAR POWER SEAT MODULE SWITCH Removal