DESCRIPTION
There may be an open circuit in one of the CAN main bus lines and/or a central gateway ECU (network gateway ECU) branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
Detection Item |
Trouble Area |
---|---|
Resistance between terminals 18 (CA4H) and 17 (CA4L) of central gateway ECU (network gateway ECU) is 70 Ω or higher. |
|
This malfunction is not related to the lines of a CAN branch except the central gateway ECU (network gateway ECU) branch lines or to ECUs or sensors connected to a CAN branch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
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DTC check procedure: Turn the ignition switch to ON 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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HINT:
PROCEDURE
1. |
CHECK FOR OPEN 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) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N36-18 (CA4H) - N36-17 (CA4L) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
*a |
Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU)) |
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
|
2. |
CHECK FOR OPEN IN CAN BUS LINES (COMBINATION METER ASSEMBLY) |
(a) Reconnect the N36 central gateway ECU (network gateway ECU) connector.
(b) Disconnect the combination meter assembly connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C9-1 (CANH) - C9-2 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
*a |
Front view of wire harness connector (to Combination Meter Assembly) |
OK |
REPLACE COMBINATION METER ASSEMBLY |
|
3. |
CHECK FOR OPEN IN CAN BUS LINES (ECM) |
(a) for 2GR-FKS
(1) Reconnect the C9 combination meter assembly connector.
(2) Disconnect the ECM connector. |
|
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E13-27 (CANH) - E13-35 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
*a |
Front view of wire harness connector (to ECM) |
(b) for 2TR-FE
(1) Reconnect the C9 combination meter assembly connector.
(2) Disconnect the ECM connector. |
|
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E20-13 (CANH) - E20-14 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
*a |
Front view of wire harness connector (to ECM) |
Result |
Proceed to |
---|---|
OK (for 2GR-FKS) |
A |
OK (for 2TR-FE) |
B |
NG |
C |
A |
REPLACE ECM |
B |
REPLACE ECM |
|
4. |
CHECK FOR OPEN IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR) |
(a) Reconnect the E13*1 or E20*2 ECM connector.
(b) Disconnect the No. 1 CAN junction connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connect to |
---|---|---|---|
J16-2 (CANH) - J16-12 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
No. 2 CAN junction connector |
J16-5 (CANH) - J16-15 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
ECM |
J16-6 (CANH) - J16-16 (CANL) |
Cable disconnected from negative (-) battery terminal |
54 to 69 Ω |
Central gateway ECU (network gateway ECU) |
*a |
Front view of wire harness connector (to No. 1 CAN Junction Connector) |
*b |
to No. 2 CAN Junction Connector |
*c |
to ECM |
*d |
to Central Gateway ECU (Network Gateway ECU) |
Result |
Proceed to |
---|---|
OK |
A |
NG (ECM CAN main line) |
B |
NG (Central Gateway ECU (Network Gateway ECU) CAN branch line) |
C |
NG (No. 2 CAN junction connector CAN main line) |
D |
A |
REPLACE NO. 1 CAN JUNCTION CONNECTOR |
B |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - ECM) |
C |
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
5. |
CHECK FOR OPEN IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J16 No. 1 CAN junction connector.
(b) Disconnect the No. 2 CAN junction connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connect to |
---|---|---|---|
J3-1 (CANH) - J3-11 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
No. 1 CAN junction connector |
J3-6 (CANH) - J3-16 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
Combination meter assembly |
*a |
Front view of wire harness connector (to No. 2 CAN Junction Connector) |
*b |
to No. 1 CAN Junction Connector |
*c |
to Combination Meter Assembly |
Result |
Proceed to |
---|---|
OK |
A |
NG (Combination meter assembly CAN main line) |
B |
NG (No. 1 CAN junction connector CAN main line) |
C |
A |
REPLACE NO. 2 CAN JUNCTION CONNECTOR |
B |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) |
C |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) |
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COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT VOLTAGE INVERTER ASSEMBLY
(a) Check the voltage inverter assembly.
(1) Measure the voltage according to the value(s) in the table below.
Text in Illustration
*a
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DESCRIPTION
Detection Item
Symptom
Trouble Area
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