DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω.
Symptom |
Trouble Area |
---|---|
Resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω. |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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DTC check procedure: Turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch), turn the cruise control main switch on, turn the LDA main switch on and then drive the vehicle at a speed of 60 km/h (37 mph) or more for approximately 5 minutes or more.
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HINT:
PROCEDURE
1. |
CHECK FOR SHORT IN CAN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the central gateway ECU (network gateway ECU).
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
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2. |
CHECK FOR SHORT IN CAN BUS LINES (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the A38 ECM connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE ECM |
NG |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
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PROCEDURE
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