DESCRIPTION
Detection Item | Symptom | Trouble Area |
---|---|---|
Combination Meter ECU Communication Stop Mode | Either condition is met:
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
Turn the ignition switch off before inspecting CAN bus wires for a ground short.
After the ignition switch is turned off, check that the key reminder warning system are not operating.
Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
Tech Tips
Operating the ignition 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 OPEN IN CAN BUS WIRE (COMBINATION METER ASSEMBLY MAIN WIRE)
*a | Front view of wire harness connector (to Combination Meter Assembly) |
Disconnect the combination meter 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 BUS MAIN WIRE OR CONNECTOR (COMBINATION METER ASSEMBLY MAIN WIRE) |
OK |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
*a | Front view of wire harness connector (to Combination Meter Assembly) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||
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Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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Result | Proceed to |
---|---|
OK | A |
NG (w/o Stop and Start System) | B |
NG (except IG+ circuit) (w/ Stop and Start System) | |
NG (for IG+ circuit) (w/ Stop and Start System) | C |
A |
REPLACE COMBINATION METER ASSEMBLY Click here |
B |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
C |
GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) Click here |