Power Mirror Surface Position Is Not Memorized

MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: Power Mirror Surface Position is not Memorized
- Power Mirror Surface Position is not Memorized

SYSTEM DESCRIPTION

If the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly LH detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. Upon receiving the seat memory switch signal, the main body ECU (multiplex network body ECU) sends the memory request signal to each outer mirror control ECU assembly via CAN communication. When receiving this signal, each outer mirror control ECU assembly stores the mirror surface position based on information from the mirror position sensor, which is built into the outer rear view mirror assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication DTC is output Diagnosis System.

Result





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

2. READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH)

(a) Using the Techstream, read the Data List Scan Tool Testing and Procedures.

Mirror L





OK:

On Techstream screen, each item changes between ON and OFF according to above chart.

NG -- INSPECT SEAT MEMORY SWITCH
OK -- Continue to next step.

3. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)

(a) Perform a seat memory operation properly Operation Check.

(b) When any seat memory switch (M1 or M2 switch) is pressed, check that the driver side seat moves to the memorized position.

OK:

Driver side seat moves to memorized position.

NG -- GO TO FRONT POWER SEAT CONTROL SYSTEM Problem Symptoms Table
OK -- Continue to next step.

4. READ VALUE USING TECHSTREAM (MIRROR POSITION MEMORY)

(a) Using the Techstream, read the Data List Scan Tool Testing and Procedures.

Mirror L / Mirror R





OK:

"ON" is displayed on Techstream.

Result





B -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH Removal

C -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH Removal

A -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

5. INSPECT SEAT MEMORY SWITCH

(a) Remove the seat memory switch Removal.





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

Standard Resistance:





NG -- REPLACE SEAT MEMORY SWITCH Removal
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU - SEAT MEMORY SWITCH)

(a) Disconnect the K8 ECU connector.

(b) Disconnect the k2 switch connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH Removal