DESCRIPTION
Detection Item | Symptom | Trouble Area |
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Multi-media Module Receiver Assembly Communication Stop Mode | Either condition is met:
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WIRING DIAGRAM
INSPECTION PROCEDURE
Note
Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work Click here.
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output Click here.
After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
DTC check procedure: Turn the engine switch on (IG) and wait at least 31 seconds.
After the repair, perform CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed Click here.
Tech Tips
Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
CHECK FOR OPEN IN CAN BUS LINES (MULTI-MEDIA MODULE RECEIVER ASSEMBLY BRANCH LINE)
Disconnect the cable from the negative (-) battery terminal.
*a | Front view of wire harness connector (to Multi-media Module Receiver Assembly) |
Disconnect the H97 multi-media module receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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|
NG |
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY) |
OK |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
*a | Front view of wire harness connector (to Multi-media Module Receiver Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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Connect the cable to the negative (-) battery terminal.
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 (POWER SOURCE CIRCUIT) |
OK |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here