BUS CHECK (COMMUNICATION BUS CHECK)
Select "Bus Check" from "System Select".
CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION
Systems (ECUs and sensors) that use CAN communication vary depending on the optional settings of the vehicle. Check which systems (ECUs and sensors) are installed on the vehicle.
| ECU/Sensor Name | Tester Display | Installed on |
|---|---|---|
| ECM | ECM (Engine) | All vehicles |
| Brake actuator assembly (skid control ECU) | Skid Control (ABS/VSC/TRAC) | All vehicles |
| Airbag sensor assembly | Airbag | All vehicles |
| Main body ECU (multiplex network body ECU) | Main Body | All vehicles |
| Combination meter assembly | Combination Meter | All vehicles |
| 4 wheel drive control ECU | Four Wheel Drive Control | All vehicles |
| Air conditioning amplifier assembly | Air Conditioning Amplifier | All vehicles |
DTC TABLE BY ECU
Tech Tips
In the CAN communication system, CAN communication system DTCs stored by an ECU can be output by using the GTS.
If CAN communication system DTCs are output, the trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "How to Proceed with Troubleshooting".
BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)
Tech Tips
DTC communication uses the CAN communication system.
| DTC Code | Detection Item |
|---|---|
| U0073 | Control Module Communication Bus Off |
| U0100 | Lost Communication With ECM/PCM "A" |
| U0114 | Lost Communication With Four-Wheel Drive Clutch Control Module |
| U0123 | Lost Communication With Yaw Rate Sensor Module |
| U0124 | Lost Communication With Lateral Acceleration Sensor Module |
MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Tech Tips
DTC communication uses the CAN communication system.
| DTC Code | Detection Item |
|---|---|
| U0100 | Lost Communication With ECM/PCM "A" |
| U0151 | Lost Communication with Restraints Control Module |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module |
| U0164 | Lost Communication with HVAC Control Module |
COMBINATION METER ASSEMBLY
Tech Tips
DTC communication uses the CAN communication system.
| DTC Code | Detection Item |
|---|---|
| U0100 | Lost Communication with ECM/PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
4 WHEEL DRIVE CONTROL ECU
Tech Tips
This ECU uses the CAN communication system for DTC communication.
| DTC Code | Detection Item |
|---|---|
| U0100 | Lost Communication with ECM / PCM "A" |
| U0122 | Lost Communication with Vehicle Dynamics Control Module |
AIR CONDITIONING AMPLIFIER ASSEMBLY
Tech Tips
DTC communication uses the CAN communication system.
| DTC Code | Detection Item |
|---|---|
| U0100 | Lost Communication With ECM/PCM "A" |
| U0142 | Lost Communication With Body Control Module "B" |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Control Module |
ECM
Tech Tips
The ECM is connected to the CAN communication system but CAN communication DTCs are not stored.
AIRBAG SENSOR ASSEMBLY
Tech Tips
The airbag sensor assembly is connected to the CAN communication system but CAN communication DTCs are not stored.
DTC COMBINATION TABLE
Tech Tips
○: Stored.
X: When one side of branch wire is open, storage may occur.
-: Not stored.
*1: Only stored when communication recovery has occurred. During communication stop, cannot be stored.
*2: Only output while a malfunction present and the ignition switch is ON.
| Output from | Output DTC | Detected Communication Stop Mode | |||
|---|---|---|---|---|---|
| V1 Bus | |||||
| Main Body ECU Communication Stop Mode |
ECM Communication Stop Mode |
Brake Actuator (Skid Control ECU) Communication Stop Mode |
Center Airbag Sensor Communication Stop Mode |
||
| Main Body ECU (Multiplex Network Body ECU) | U0100 | ○ [*1] |
○ | X | X |
| U0151 | ○ [*1] |
X | X | ○ | |
| U0155 | ○ [*1] |
X | X | X | |
| U0164 | ○ [*1] |
X | X | X | |
| Brake Actuator Assembly (Skid Control ECU) | U0073*2 | X | X | ○ [*1] |
X |
| U0100*2 | X | ○ | ○ [*1] |
X | |
| U0114*2 | X | X | ○ [*1] |
X | |
| U0123*2 | X | X | ○ [*1] |
○ | |
| U0124*2 | X | X | ○ [*1] |
○ | |
| Combination Meter Assembly | U0100 | X | ○ | X | X |
| U0129 | X | X | ○ | X | |
| U0142 | ○ | X | X | X | |
| U0151 | X | X | X | ○ | |
| Air Conditioning Amplifier Assembly | U0100 | X | ○ | X | X |
| U0142 | ○ | X | X | X | |
| U0155 | X | X | X | X | |
| 4 Wheel Drive Control ECU | U0100 | X | ○ | X | X |
| U0122 | X | X | ○ | X | |
| ECM | - | - | - | - | - |
| Airbag Sensor Assembly | - | - | - | - | - |
| Output from | Output DTC | Detected Communication Stop Mode | ||
|---|---|---|---|---|
| V1 Bus | ||||
| Combination Meter ECU Communication Stop Mode |
4WD Control ECU Communication Stop Mode |
Air Conditioning Amplifier Communication Stop Mode |
||
| Main Body ECU (Multiplex Network Body ECU) | U0100 | X | X | X |
| U0151 | X | X | X | |
| U0155 | ○ | X | X | |
| U0164 | X | X | ○ | |
| Brake Actuator Assembly (Skid Control ECU) | U0073*2 | X | X | X |
| U0100*2 | X | X | X | |
| U0114*2 | X | ○ | X | |
| U0123*2 | X | X | X | |
| U0124*2 | X | X | X | |
| Combination Meter Assembly | U0100 | ○ | X | X |
| U0129 | ○ | X | X | |
| U0142 | ○ | X | X | |
| U0151 | ○ | X | X | |
| Air Conditioning Amplifier Assembly | U0100 | X | X | ○ |
| U0142 | X | X | ○ | |
| U0155 | ○ | X | ○ | |
| 4 Wheel Drive Control ECU | U0100 | X | ○ | X |
| U0122 | X | ○ | X | |
| ECM | - | - | - | - |
| Airbag Sensor Assembly | - | - | - | - |