| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000014VMV |
| Model Year Start: 2018 | Model: Camry HV | Prod Date Range: [07/2017 - 09/2018] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1349,C134A; Pressure Holding Solenoid Valve Learning Undone; 2018 MY Camry HV [07/2017 - 09/2018] | ||
|
DTC |
C1349 |
Pressure Holding Solenoid Valve Learning Undone |
|
DTC |
C134A |
Pressure Holding Solenoid Valve Learning Malfunction |
DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) stores the individual characteristic of each holding solenoid built into the brake actuator assembly. Based on the stored information, the skid control ECU (brake booster with master cylinder assembly) calibrates the individual differences and controls systems.
The skid control ECU (brake booster with master cylinder assembly) receives the shift position P signal from the hybrid vehicle control ECU assembly through the CAN communication system.
These DTCs are cleared when the ABS holding solenoid valve learning results are normal.
|
DTC No. |
Detection Item |
INF Code |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|---|
|
C1349 |
Pressure Holding Solenoid Valve Learning Undone |
1155 |
The ABS holding solenoid valve learning value is not stored. |
Perform ABS holding solenoid valve learning and check for DTCs. If no DTCs are output again, the valve is normal. |
Electronically controlled brake system DTC HINT: During Test Mode, related DTCs are cleared. |
|
C134A |
Pressure Holding Solenoid Valve Learning Malfunction |
1156 |
The ABS holding solenoid valve learning value cannot be obtained. |
|
Electronically controlled brake system DTC |
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake booster with master cylinder assembly) or brake actuator 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)
HINT:
Before performing linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization, DTC C1203 will be output.
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear the DTCs.
Chassis > ABS/VSC/TRAC > Clear DTCs
(b) Turn the power switch off.
(c) Turn the power switch on (IG).
(d) Check that DTCs other than C1345, C1349 and C1392 are not output.
Chassis > ABS/VSC/TRAC > Trouble Codes
OK:
DTCs other than C1345, C1349 and C1392 are not output.
| NG |
|
|
|
2. |
PERFORM AIR BLEEDING |
(a) Perform the air bleeding procedure in Bleed Brake System.
Click here
|
|
3. |
PERFORM ABS HOLDING SOLENOID VALVE LEARNING |
(a) Turn the power switch off.
(b) Check and ensure the following conditions required for performing ABS holding solenoid valve learning and then perform ABS holding solenoid valve learning.
Click here
Chassis > ABS/VSC/TRAC > Utility
|
Tester Display |
|---|
|
ECB Utility |
- The auxiliary battery voltage is 11 to 15.5 V when the power switch is on (READY).
- The brake actuator assembly is not hot.
- The hybrid control system is not malfunctioning.
- The shift state indicator shows that the shift lever is in P.
- The READY light in the combination meter assembly is illuminated.
- The brake pedal is not depressed.
- The parking brake is released.
NOTICE:
Learning will be performed in the order of linear solenoid valve offset learning and then ABS holding solenoid valve learning.
|
|
4. |
RECONFIRM DTC |
(a) Clear the DTCs.
Chassis > ABS/VSC/TRAC > Clear DTCs
(b) Turn the power switch off.
(c) Turn the power switch on (IG).
(d) Check if the same DTC is output.
Chassis > ABS/VSC/TRAC > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs C1349 and C134A are not output. |
A |
|
DTCs C1349 and/or C134A are output. |
B |
| A |
|
END |
|
|
5. |
PERFORM ACTIVE TEST USING TECHSTREAM (ABS SOLENOID) |
(a) Select the Active Test on the Techstream.
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
ABS Solenoid (SRLH) |
Holding solenoid valve (RLH) |
Solenoid ON/OFF |
- |
|
ABS Solenoid (SRRH) |
Holding solenoid valve (RRH) |
Solenoid ON/OFF |
- |
|
ABS Solenoid (SFLH) |
Holding solenoid valve (FLH) |
Solenoid ON/OFF |
- |
|
ABS Solenoid (SFRH) |
Holding solenoid valve (FRH) |
Solenoid ON/OFF |
- |
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
|---|
|
ABS Solenoid (SRLH) |
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
|---|
|
ABS Solenoid (SRRH) |
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
|---|
|
ABS Solenoid (SFLH) |
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
|---|
|
ABS Solenoid (SFRH) |
(b) Operate the SFRH (front right wheel holding solenoid valve), SFLH (front left wheel holding solenoid valve), SRRH (rear right wheel holding solenoid valve) and SRLH (rear left wheel holding solenoid valve) solenoids one by one. While operating each solenoid, depress the brake pedal, open the corresponding bleeder plug and check that brake fluid does not flow from the bleeder plug.
OK:
Brake fluid does not flow from the corresponding bleeder plug when the brake pedal is depressed when operating each solenoid.
(c) While not operating the SFRH (front right wheel holding solenoid valve), SFLH (front left wheel holding solenoid valve), SRRH (rear right wheel holding solenoid valve) and SRLH (rear left wheel holding solenoid valve) solenoids, depress the brake pedal, open each bleeder plug and check that brake fluid flows from each bleeder plug.
OK:
Brake fluid flows from each bleeder plug when not operating each solenoid and the brake pedal is depressed.
| OK |
|
| NG |
|
|
|