Can Communication System (W/ Vsc) Skid Control Ecu Communication Stop Mode
Networking. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PRECAUTION
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU CAN
BRANCH WIRE)
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)
CAN COMMUNICATION SYSTEM (w/ VSC) - Skid Control ECU Communication Stop Mode |
DESCRIPTION
Detection Item
| Symptom
| Trouble Area
|
Skid Control ECU Communication Stop Mode
| Either condition is met:
- "Skid Control (ABS/VSC/TRAC)" is not displayed on the "Bus Check" screen.
- "Skid Control ECU Communication Stop Mode" in "DTC Communication Table" applies.
| - Power source or inside of brake actuator assembly (skid control ECU)
- Brake actuator assembly (skid control ECU) CAN branch wire or connector
- Brake actuator assembly (skid control ECU)
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
- HINT:
- Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
- NOTICE:
- After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (HILUX_TGN26 RM000004QR1006X.html).
| 2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.
- CAUTION:
- Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
- NOTICE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected (HILUX_TGN26 RM000004QR3008X.html).
| 3.CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU CAN
BRANCH WIRE) |
Disconnect the A36 brake actuator assembly (skid control ECU) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
A36-25 (CANH) - A36-14 (CANL)
| Ignition switch off
| 54 to 69 Ω
|
Text in Illustration*a
| Front view of wire harness connector
(to Brake Actuator Assembly [Skid Control ECU])
|
| | REPAIR OR REPLACE SKID CONTROL ECU CAN BRANCH WIRE OR CONNECTOR (CANH, CANL) |
|
|
| 4.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND) |
Connect the cable to the negative (-) battery terminal.
- NOTICE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected (HILUX_TGN26 RM000004QR3008X.html).
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
A36-12 (+BS) - Body ground
| Always
| 11 to 14 V
|
A36-24 (+BM) - Body ground
| Always
| 11 to 14 V
|
A36-34 (IG1) - Body ground
| Ignition switch ON
| 11 to 14 V
|
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
A36-1 (GND1) - Body ground
| Always
| Below 1 Ω
|
A36-13 (GND2) - Body ground
| Always
| Below 1 Ω
|
Text in Illustration*a
| Front view of wire harness connector
(to Brake Actuator Assembly [Skid Control ECU])
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
