Description
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independently). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
DTC DETECTION LOGIC
DTC | Trouble diagnosis name | DTC detection condition | Possible causes |
U1000 | CAN Communication Line | TCM is not transmitting CAN communication signal for 2 seconds or more. |
|
1.PRECONDITIONING
If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
Is "U1000" detected?
YES >> Go to TM, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to LAN, "Trouble Diagnosis Flow Chart".
Description The amount of data transmitted from each control unit is read. DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes ...
DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U1117 Lost Communication With ABS When the ignition switch is ON, ...
Tire pressure monitoring system
TIRE PRESSURE MONITORING SYSTEM : System Diagram
TIRE PRESSURE MONITORING SYSTEM : System
Description
The BCM has pressure judgment and trouble diagnosis functions. When the
BCM detects low inflation pressure
or another unusual symptom, the low tire pressure warning lamp in the
c ...
Low tire pressure warning lamp
blinks
Diagnosis Procedure
NOTE:
If low tire pressure warning lamp repeats blinking ON for 2 seconds and OFF for
0.2 seconds, wake-up operation
for all transmitters is not complete.
Carry out transmitter wake-up operation. Refer to WT "Work Procedure".
1.CHECK BCM CONNECTOR
Turn igniti ...