| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000014VNK |
| Model Year Start: 2018 | Model: Camry HV | Prod Date Range: [07/2017 - 09/2018] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C14B6; Stroke Sensor / Reaction Force Pressure Sensor Output Inconsistent; 2018 MY Camry HV [07/2017 - 09/2018] | ||
|
DTC |
C14B6 |
Stroke Sensor / Reaction Force Pressure Sensor Output Inconsistent |
DESCRIPTION
If the skid control ECU (brake booster with master cylinder assembly) detects an inconsistency between the brake pedal stroke sensor assembly signal and reaction force pressure sensor signal, DTC C14B6 is stored.
|
DTC No. |
Detection Item |
INF Code |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|---|
|
C14B6 |
Stroke Sensor / Reaction Force Pressure Sensor Output Inconsistent |
209 |
The difference between brake pedal stroke sensor assembly output value and reaction force pressure sensor output value is above the threshold for a certain period of time. |
|
Electronically controlled brake system DTC |
CAUTION / NOTICE / HINT
NOTICE:
After replacing the brake actuator (brake booster with master cylinder assembly) or brake pedal stroke sensor assembly perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".
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![2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CUSTOMER PROBLEM ANALYSIS (CHECK CONDITION WHEN MALFUNCTION OCCURRED) AND FREEZE FRAME DATA |
(a) Interview the customer to check the vehicle conditions when the brake warning light / yellow (minor malfunction) illuminated.
(b) Using the Techstream, read the "Shift Lever Position", "Vehicle Speed", "Yaw Rate Sensor", "Steering Angle Sensor", "Stop Light SW", "Stroke Sensor", "Reaction Force Pressure", "Servo Pressure" and "Accumulator Pressure" of the Freeze Frame Data stored when the DTC was stored.
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HINT:
- Freeze Frame Data is only stored once when a DTC is stored.
- If other DTCs are output, repair any malfunctions related to those DTCs first, and then reproduce the conditions that caused DTC C14B6 to be stored based on the interview with the customer.
|
|
2. |
INSPECT BRAKE PEDAL STROKE SENSOR ASSEMBLY OUTPUT VOLTAGES AND WHEEL CYLINDER PRESSURE |
(a) Turn the power switch off.
(b) Mount a pedal effort gauge.
(c) Disconnect the A45 brake booster pump assembly connector.
(d) Depress the brake pedal 10 times or more until it becomes hard.
HINT:
Depressing the brake pedal with the connector of the brake booster pump assembly disconnected drops the accumulator pressure to approximately 0 MPa.
(e) Connect an LSPV gauge set.
(f) Select the Data List on the Techstream.
Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Stroke Sensor |
Brake pedal stroke sensor assembly |
Min.: 0.00 V, Max.: 5.00 V |
Brake pedal released: 0.65 to 1.35 V |
Reading increases when brake pedal is depressed |
Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
|---|
|
Stroke Sensor |
(g) Slowly depress the brake pedal and check the brake pedal stroke sensor assembly output voltages and the wheel cylinder pressure with respect to brake pedal depression force.
NOTICE:
Check the wheel cylinder pressure with the switching solenoid (SSA, SGH) off and an accumulator pressure of 0 MPa.
Standard Pressure:
for Front Right Wheel
|
Brake Effort [N (kgf, lbf)] |
Stroke Sensor [V] |
Hydraulic Pressure [MPa (kgf/cm2, psi)] |
|---|---|---|
|
200 (20, 45.0) |
1.52 to 2.22 |
0.04 (0.4, 5.8) to 2.04 (20.8, 296) |
|
500 (51, 112.4) |
1.81 to 2.51 |
2.06 (21.0, 299) to 4.06 (41.4, 589) |
for Front Left Wheel
|
Brake Effort [N (kgf, lbf)] |
Stroke Sensor [V] |
Hydraulic Pressure [MPa (kgf/cm2, psi)] |
|---|---|---|
|
200 (20, 45.0) |
1.52 to 2.22 |
0.04 (0.4, 5.8) to 2.04 (20.8, 296) |
|
500 (51, 112.4) |
1.81 to 2.51 |
2.06 (21.0, 299) to 4.06 (41.4, 589) |
| OK |
|
|
|
3. |
REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY |
(a) Turn the power switch off.
(b) Reconnect the A45 brake booster pump assembly connector.
(c) Replace brake pedal stroke sensor assembly.
Click here
(d) Perform zero point calibration of the brake pedal stroke sensor assembly.
Click here
Chassis > ABS/VSC/TRAC > Utility
|
Tester Display |
|---|
|
ECB Utility |
|
|
4. |
RECONFIRM DTC |
(a) Clear the DTCs.
Chassis > ABS/VSC/TRAC > Clear DTCs
(b) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(c) Turn the power switch off and wait for 2 minutes or more.
(d) Turn the power switch on (IG).
(e) Check if the same DTC is output.
Chassis > ABS/VSC/TRAC > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C14B6 is not output. |
A |
|
DTC C14B6 is output. |
B |
| A |
|
END |
| B |
|
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