DESCRIPTION
There may be an open circuit in one of the bus 5 main lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the network gateway ECU is 70 Ω or higher.
Symptom | Trouble Area |
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Resistance between terminals 15 (CA5H) and 16 (CA5L) of network gateway ECU is 70 Ω or higher. |
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This malfunction is not related to the lines of a bus 5 branch or to ECUs or sensors connected to a bus 5 branch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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HINT:
PROCEDURE
1. | CHECK FOR OPEN IN CAN BUS LINES (NETWORK GATEWAY ECU) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the J75 network gateway ECU connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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OK | ![]() | REPLACE NETWORK GATEWAY ECU |
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2. | CHECK FOR OPEN IN CAN BUS LINES (COMBINATION METER ASSEMBLY) |
(a) Reconnect the J75 network gateway ECU connector.
(b) Disconnect the J10 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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OK | ![]() | REPLACE COMBINATION METER ASSEMBLY |
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3. | CHECK FOR OPEN IN CAN BUS LINES (NO. 5 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J10 combination meter assembly connector.
(b) Disconnect the J97 No. 5 CAN junction connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
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Result | Proceed to |
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OK | A |
NG (Network gateway ECU main lines) | B |
NG (Combination meter assembly main lines) | C |
A | ![]() | REPLACE NO. 5 CAN JUNCTION CONNECTOR |
B | ![]() | REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NETWORK GATEWAY ECU - NO. 5 CAN JUNCTION CONNECTOR) |
C | ![]() | REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 5 CAN JUNCTION CONNECTOR) |
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