CAN COMMUNICATION SYSTEM(for RHD) Combination Meter ECU Communication Stop Mode
DESCRIPTION
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Combination Meter ECU Communication Stop Mode | Either condition is met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Note
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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 or any 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.
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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.
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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.
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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 for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.
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After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed.
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Inspect the fuses for circuits related to this system before performing the following procedure.
Tech Tips
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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.
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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
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CHECK FOR OPEN IN CAN BUS LINES (COMBINATION METER ASSEMBLY MAIN BUS LINE)
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Disconnect the cable from the negative (-) battery terminal.
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Disconnect the G16 combination meter assembly connector.
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*a Front view of wire harness connector
(to Combination Meter Assembly)
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition G16-23 (CANH) - G16-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result Result OK NG
NG 
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER ASSEMBLY)
OK 
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CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
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*a Front view of wire harness connector
(to Combination Meter Assembly)
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition G16-21 (ES) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω -
Reconnect the cable to the negative (-) battery terminal.
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Measure the voltage according to the value(s) in the table below.
Standard Voltage Tester Connection Condition Specified Condition G16-1 (B) - Body ground Always 11 to 14 V G16-2 (IG+) - Body ground Engine switch on (IG) 11 to 14 V Result Result Proceed to OK A NG (except IG+ signal circuit) B NG (for IG+ signal circuit) C
A
REPLACE COMBINATION METER ASSEMBLY Click here
B
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
C
GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) for 2AR-FE: Click here
GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) for 2GR-FKS: Click here -