DESCRIPTION
Symptom |
Trouble Area |
---|---|
Check CAN Communication Connection |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
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HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
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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 GTS OPERATION |
HINT:
Read the GTS operator's manual before use.
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(a) Connect the GTS to the DLC3 of another vehicle.
(b) Turn the ignition switch to ON.
(c) Turn the GTS on.
(d) Check that the GTS and ECUs can communicate with the ignition switch ON.
HINT:
Result |
Proceed to |
---|---|
OK (Communication between the GTS and the vehicle is not possible, but communication is possible when connected to another vehicle.) |
A |
NG (Communication is not possible between the GTS and the vehicle, nor between the GTS and another vehicle.) |
B |
B |
REFER TO GTS OPERATOR'S MANUAL |
|
2. |
CHECK HARNESS AND CONNECTOR (DLC3 POWER SOURCE CIRCUIT) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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|
(b) Disconnect the cable from the negative (-) auxiliary battery terminal.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
I26-4 (CG) - Body ground |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 POWER SOURCE CIRCUIT) |
|
3. |
CHECK OPEN IN CAN BUS LINES |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
GO TO STEP 6 |
|
4. |
CHECK SHORT IN CAN BUS LINE |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
GO TO STEP 7 |
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5. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Disconnect the central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(c) Reconnect the cable to the negative (-) auxiliary battery terminal.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
I231-1 (BATT) - Body ground |
Ignition switch off |
11 to 14 V |
I231-2 (ACC) - Body ground |
Ignition switch ACC |
11 to 14 V |
I231-20 (IGR) - Body ground |
Ignition switch ON |
11 to 14 V |
I231-19 (IGP) - Body ground |
Ignition switch ON |
11 to 14 V |
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
6. |
CHECK FOR OPEN IN CAN BUS LINE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - DLC3) |
(a) Disconnect the central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
*1 |
DLC3 |
- |
- |
*a |
Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU)) |
- |
- |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
I231-16 (CA6H) - I26-6 (CANH) |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 1 Ω |
I231-17 (CA6L) - I26-14 (CANL) |
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - DLC3) |
7. |
CHECK SHORT IN CAN BUS LINE |
(a) Disconnect the central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
*1 |
DLC3 |
- |
- |
*a |
Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU)) |
- |
- |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
I231-16 (CA6H) - I231-17 (CA6L) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
I231-16 (CA6H) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
I231-17 (CA6L) - I26-4 (CG) |
||
I231-16 (CA6H) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
I231-17 (CA6L) - I26-16 (BAT) |
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |