| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM10000000214QZ |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C14C617; Electronic Brake Booster Control Module "A" Supply Voltage Circuit Voltage Above Threshold; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C14C617 |
Electronic Brake Booster Control Module "A" Supply Voltage Circuit Voltage Above Threshold |
DESCRIPTION
Refer to DTC C110E14.
Click here
![2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C110E14; Brake Booster Motor "A" Supply Voltage Circuit Short to Ground or Open+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
C14C617 |
Electronic Brake Booster Control Module "A" Supply Voltage Circuit Voltage Above Threshold |
The voltage of terminal +BI1 is 16.6 V or more for 0.8 seconds or more. |
|
Comes on |
|
MONITOR DESCRIPTION
When the vehicle is being driven, the voltage at VM1 or IG1 of the No. 1 skid control ECU (brake booster with master cylinder assembly) is a certain value or more, the No. 2 skid control ECU (brake actuator assembly) judges that the voltage at VM1 or IG1 is excessively high, the MIL is illuminated and a DTC is stored.
MONITOR STRATEGY
|
Related DTCs |
C14C8 (Case 1): Brake system voltage circuit high C14C8 (Case 2): Brake system voltage circuit low |
|
Required Sensors/Components(Main) |
No. 2 skid control ECU (brake actuator assembly) |
|
Required Sensors/Components(Related) |
Speed sensor No. 2 skid control ECU (brake actuator assembly) |
|
Frequency of Operation |
Continuous |
|
Duration |
0.768 seconds |
|
MIL Operation |
Immediately |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
Monitor runs whenever the following DTCs are not stored |
None |
Case 2
|
Both of the following conditions are met |
- |
|
IG1 |
Valid |
|
Vehicle speed |
Higher than 3 km/h (1.864 mph) |
TYPICAL MALFUNCTION THRESHOLDS
Case 1
|
Brake system voltage 1 |
16.6 V or more |
Case 2
|
IG1 voltage |
18.8 V or more |
COMPONENT OPERATING RANGE
Case 1
|
Brake system voltage 1 |
Less than 16.6 V |
Case 2
|
All of the following conditions are met |
- |
|
IG1 |
Valid |
|
IG1 voltage |
3.8 V or more |
|
IG1 voltage |
Less than 18.8 V |
CONFIRMATION DRIVING PATTERN
NOTICE:
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
HINT:
- After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off.
- Turn the ignition switch to ON (READY) and turn the GTS on.
-
Drive the vehicle at 10 km/h (6 mph) or more for 1 second or more. [*]
HINT:
[*]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Chassis / Brake/EPB / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
WIRING DIAGRAM
Refer to DTC C110E14.
Click here
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before performing troubleshooting, make sure to confirm that the auxiliary battery voltage is normal.
Click here
-
After replacing the No. 1 skid control ECU (brake booster with master cylinder assembly), perform "Calibration" after performing "Reset Memory".
Click here
PROCEDURE
|
1. |
CHECK DTC |
(a) Check the DTCs that are output.
Chassis > Brake Booster > Trouble Codes
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
Only DTC C14C617 is output. |
A |
|
DTCs other than C14C617 are output. |
B |
| B |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
|
2. |
CHECK HARNESS AND CONNECTOR (+BI1 TERMINAL) |
|
(a) Turn the ignition switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(c) Disconnect the A104 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A104-14 (+BI1) - Body ground |
Always |
11 to 14 V |
|
Result |
Proceed to |
|---|---|
|
11 to 14 V. |
A |
|
Below 11 V. |
B |
| A |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
| B |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|