DESCRIPTION
Detection Item | Symptom | Trouble Area |
---|---|---|
Main Body ECU Communication Stop Mode | Either condition is met:
|
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WIRING DIAGRAM
INSPECTION PROCEDURE
Note
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Tech Tips
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
PROCEDURE
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
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 disable the SRS system.
Note
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.
NEXT |
CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU BRANCH WIRE)
*a | Rear view of wire harness connector (to Main Body ECU [Multiplex Network Body ECU]) |
Disconnect the G64 main body ECU (multiplex network body ECU) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE MAIN BODY ECU BRANCH WIRE OR CONNECTOR (CANH, CANL) |
OK |
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)
Connect the cable to the negative (-) battery terminal.
Note
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.
*a | Rear view of wire harness connector (to Main Body ECU [Multiplex Network Body ECU]) |
*b | Front view of wire harness connector (to Main Body ECU [Multiplex Network Body ECU]) |
Remove the main body ECU (multiplex network body ECU) Click here.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
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Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||||||||
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|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here