DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN BUS LINE (MAIN WIRE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT)
CHECK CAN MAIN WIRE FOR DISCONNECTION (NO. 4 JUNCTION CONNECTOR)
CONNECT CONNECTOR
CHECK CAN MAIN WIRE FOR DISCONNECTION (COMBINATION METER ECU)
CONNECT CONNECTOR
CHECK CAN MAIN WIRE FOR DISCONNECTION (MAIN BODY ECU)
CHECK CAN BUS LINE FOR SHORT
CHECK CAN BUS LINE FOR SHORT (MAIN BODY ECU)
CHECK CAN BUS LINE FOR SHORT (COMBINATION METER ECU)
CHECK CAN BUS LINE FOR SHORT (CERTIFICATION ECU)
CHECK CAN BUS LINE FOR SHORT
CHECK CAN BUS LINE FOR DISCONNECTION
DTC B2326 CAN MS Bus Line Communication Malfunction |
DESCRIPTION
DTC Code
| DTC Detection Condition
| Trouble Area
|
B2326
| Lost Communication with the main body ECU.
| - CAN No. 2 bus circuit
- Certification ECU branch wire or connector
- Main body ECU main wire or connector
- Combination meter ECU main wire or connector
- Certification ECU
- Main body ECU
- Combination meter ECU
- No. 4 junction connector
|
- HINT:
- For vehicles with an entry and start system only.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Turn the ignition switch off before measuring the resistance of the main wire and the branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder buzzer are not in operation.
- Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
- HINT:
- Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
| 1.CHECK CAN BUS LINE (MAIN WIRE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT) |
Remove the main body ECU with the connector connected.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
| Resistance of Malfunction
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 54 to 69 Ω
| Below 53 Ω: Short in line
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 54 to 69 Ω
| Higher than 69 Ω or higher: Open in CAN main bus line
|
E19-11 (CANP) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
| Below 200 Ω: Ground short
|
E19-12 (CANN) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
| Below 200 Ω: Ground short
|
E19-11 (CANP) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
| Below 6 kΩ: +B short
|
E19-12 (CANN) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
| Below 6 kΩ: +B short
|
ResultResult
| Proceed to
|
NG
- Open in CAN main bus line
| A
|
NG
- Short in line
- +B short
- Ground short
| B
|
OK
| C
|
| 2.CHECK CAN MAIN WIRE FOR DISCONNECTION (NO. 4 JUNCTION CONNECTOR) |
for LHD
Disconnect the E76 No. 4 junction connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
| Inspection Area
|
E76-9 (MSCH) - E76-20 (MSCL)
| Ignition switch off
| 108 to 132 Ω
| Combination meter side CAN main wire
|
E76-11 (CANP) - E76- 22 (CANN)
| Ignition switch off
| 108 to 132 Ω
| Main body ECU side CAN main wire
|
for RHD
Disconnect the E113 and E114 No. 4 junction connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
| Inspection Area
|
E113-1 (MSCH) - E113-12 (MSCL)
| Ignition switch off
| 108 to 132 Ω
| Combination meter side CAN main wire
|
E114-11 (CANP) - E114-22 (CANN)
| Ignition switch off
| 108 to 132 Ω
| Main body ECU side CAN main wire
|
ResultResult
| Proceed to
|
NG (Combination meter side CAN main wire)
| A
|
NG (Main body ECU side CAN main wire)
| B
|
OK
| C
|
| |
|
| | REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR |
|
|
Reconnect the E76*1 or E113*2 and E114*2 No. 4 junction connectors.
- *1: for LHD
- *2: for RHD
| 4.CHECK CAN MAIN WIRE FOR DISCONNECTION (COMBINATION METER ECU) |
Disconnect the E22 combination meter ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E22-9 (MSCH) - E22-10 (MSCL)
| Ignition switch off
| 108 to 132 Ω
|
| | REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE COMBINATION METER ECU |
|
Reconnect the E76*1 or E113*2 and E114*2 No. 4 junction connectors.
- *1: for LHD
- *2: for RHD
| 6.CHECK CAN MAIN WIRE FOR DISCONNECTION (MAIN BODY ECU) |
Disconnect the E19 main body ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 108 to 132 Ω
|
| | REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR |
|
|
| 7.CHECK CAN BUS LINE FOR SHORT |
Remove the main body ECU with the connector connected.
Disconnect the E22 combination meter ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 108 to 132 Ω
|
E19-11 (CANP) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-12 (CANN) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-11 (CANP) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
E19-12 (CANN) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
Reconnect the E22 combination meter ECU connector.
Disconnect the E63 certification ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 54 to 69 Ω
|
E19-11 (CANP) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-12 (CANN) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-11 (CANP) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
E19-12 (CANN) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
Reconnect the E63 certification ECU connector.
ResultResult
| Proceed to
|
NG
| A
|
OK (Combination meter ECU)
| B
|
OK (Certification ECU)
| C
|
| | REPLACE COMBINATION METER ECU |
|
|
| | REPLACE CERTIFICATION ECU |
|
|
| 8.CHECK CAN BUS LINE FOR SHORT (MAIN BODY ECU) |
Disconnect the E76*1 or E114*2 No. 4 junction connector.
- *1: for LHD
- *2: for RHD
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 108 to 132 Ω
|
E19-11 (CANP) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-12 (CANN) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-11 (CANP) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
E19-12 (CANN) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
| 9.CHECK CAN BUS LINE FOR SHORT (COMBINATION METER ECU) |
Disconnect the E22 combination meter ECU connector.
Disconnect the E76*1 or E113*2 No. 4 junction connector.
- *1: for LHD
- *2: for RHD
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E22-9 (MSCH) - E22-10 (MSCL)
| Ignition switch off
| 200 Ω or higher
|
E22-9 (MSCH) - E22-33 (ET)
| Ignition switch off
| 200 Ω or higher
|
E22-10 (MSCL) - E22-33 (ET)
| Ignition switch off
| 200 Ω or higher
|
E22-9 (MSCH) - E22-22 (B)
| Ignition switch off
| 6 kΩ or higher
|
E22-10 (MSCL) - E22-22 (B)
| Ignition switch off
| 6 kΩ or higher
|
| | REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR |
|
|
| 10.CHECK CAN BUS LINE FOR SHORT (CERTIFICATION ECU) |
Disconnect the E63 certification ECU connector.
Disconnect the E76*1 or E113*2 No. 4 junction connector.
- *1: for LHD
- *2: for RHD
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E63-27 (CANH) - E63-28 (CANL)
| Ignition switch off
| 200 Ω or higher
|
E63-27 (CANH) - E63-17 (E)
| Ignition switch off
| 200 Ω or higher
|
E63-28 (CANL) - E63-17 (E)
| Ignition switch off
| 200 Ω or higher
|
E63-27 (CANH) - E63-1 (+B)
| Ignition switch off
| 6 kΩ or higher
|
E63-28 (CANL) - E63-1 (+B)
| Ignition switch off
| 6 kΩ or higher
|
| | REPLACE CERTIFICATION ECU OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE NO. 4 JUNCTION CONNECTOR |
|
| 11.CHECK CAN BUS LINE FOR SHORT |
Disconnect the E19 and IE main body ECU connectors.
Disconnect the E76*1 or E114*2 No. 4 junction connector.
- *1: for LHD
- *2: for RHD
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
E19-11 (CANP) - E19-12 (CANN)
| Ignition switch off
| 200 Ω or higher
|
E19-11 (CANP) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-12 (CANN) - IE-17 (GND1)
| Ignition switch off
| 200 Ω or higher
|
E19-11 (CANP) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
E19-12 (CANN) - E19-1 (AM1)
| Ignition switch off
| 6 kΩ or higher
|
| | REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR |
|
|
| 12.CHECK CAN BUS LINE FOR DISCONNECTION |
Recheck for DTC.
