DESCRIPTION
The skid control ECU assembly is connected to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding this switch turns off TRAC and VSC operation. If TRAC and VSC operations are turned off, the TRAC OFF message will be displayed on the multi-information display and the VSC OFF indicator light will come on.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform system variant learning.
Click here
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output.
Click here
Result |
Proceed to |
---|---|
DTCs are not output. |
A |
DTCs are output. |
B |
B |
INSPECT CAN COMMUNICATION SYSTEM |
|
2. |
CHECK IF BRAKE ACTUATOR ASSEMBLY CONNECTOR IS SECURELY CONNECTED |
(a) Check if the skid control ECU (brake actuator assembly) connector is securely connected.
OK:
The connector is securely connected.
NG |
CONNECT CONNECTOR TO BRAKE ACTUATOR ASSEMBLY CORRECTLY |
|
3. |
READ VALUE USING TECHSTREAM (TRAC/VSC OFF MODE) |
(a) Select the Data List on the Techstream.
Click here
Chassis > ABS/VSC/TRAC/EPB > Data List
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
TRAC/VSC Off Mode |
TRAC/VSC off mode |
Normal, TRAC OFF, VSC Expert Mode or VSC OFF |
Normal: Normal mode TRAC OFF: TRAC off mode VSC OFF: VSC off mode |
- |
Tester Display |
---|
TRC/VSC Off Mode |
(b) Check the indicator light and mode condition on the Techstream changes according to VSC OFF switch operation.
Standard:
Switch Operation |
Mode Condition Display |
Multi-information Display (TRAC OFF message) |
VSC OFF Indicator Light |
---|---|---|---|
Not pressed |
Normal |
Not displayed |
Does not come on |
Pressing the VSC OFF switch (electric parking brake switch assembly) |
TRAC OFF |
Displayed |
Does not come on |
Pressing and holding the VSC OFF switch (electric parking brake switch assembly) |
VSC OFF |
Displayed |
Comes on |
Result |
Proceed to |
---|---|
Indicator light and mode condition display do not change. |
A |
Mode condition display is normal, but indicator light does not change. |
B |
Indicator light and mode condition display are normal. |
C |
B |
INSPECT METER / GAUGE SYSTEM |
C |
USE SIMULATION METHOD TO CHECK |
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (TRC (TRAC) OFF INDICATOR LIGHT AND VSC OFF INDICATOR LIGHT) |
(a) Select the Active Test on the Techstream.
Click here
Chassis > ABS/VSC/TRAC/EPB > Active Test
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
TRC(TRAC) OFF Indicator Light |
Multi-information display (TRAC OFF massage) |
Display ON/OFF |
Observe combination meter assembly |
VSC OFF Indicator Light |
VSC OFF indicator light |
Indicator light ON/OFF |
Observe combination meter assembly |
Tester Display |
---|
TRC(TRAC) OFF Indicator Light |
Tester Display |
---|
VSC OFF Indicator Light |
(b) Check the multi-information display (TRAC OFF message) and VSC OFF indicator light on the combination meter assembly turn on or off in accordance with Techstream operation.
OK:
The multi-information display (TRAC OFF message) and VSC OFF indicator light turn on or off in accordance with Techstream operation.
NG |
GO TO STEP 7 |
|
5. |
INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY |
(a) Inspect the electric parking brake switch assembly.
Click here
NG |
REPLACE ELECTRIC PARKING BRAKE SWITCH ASSEMBLY |
|
6. |
CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-6 (CSW) - F67-13 (+) |
Always |
Below 1 Ω |
A42-6 (CSW) or F67-13 (+) - Body ground |
Always |
10 kΩ or higher |
F67-8 (E) - Body ground |
Always |
Below 1 Ω |
OK |
REPLACE BRAKE ACTUATOR ASSEMBLY |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
7. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the Techstream.
Click here
Body Electrical > Combination Meter > Active Test
Tester Display |
---|
Meter Display 1 |
Tester Display |
---|
Indicat. VSC OFF |
(b) Check the combination meter assembly.
OK:
The multi-information display (TRC OFF message) and VSC OFF indicator light turn on or off in accordance with Techstream operation.
OK |
REPLACE BRAKE ACTUATOR ASSEMBLY |
NG |
INSPECT METER / GAUGE SYSTEM |
Toyota CH-R Service Manual > Toyota Entune System: Parts Location
PARTS LOCATION
ILLUSTRATION
*A
w/ Navigation System
-
-
*1
FRONT NO. 1 SPEAKER ASSEMBLY RH
*2
FRONT NO. 2 SPEAKER ASSEMBLY RH
*3
RADIO AND DISPLAY RECEIVER ASSEMBLY
...
Toyota CH-R Service Manual > Occupant Detection Sensor: Inspection
INSPECTION
PROCEDURE
1. INSPECT OCCUPANT DETECTION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION PAD)
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition ...