| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EXIS |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 02/2019] |
| Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): C13A3,C13AB; Open or Short Circuit in Lock Switch Circuit; 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019] | ||
|
DTC |
C13A3 |
Open or Short Circuit in Lock Switch Circuit |
|
DTC |
C13AB |
Lock Switch Circuit Comparison |
DESCRIPTION
When the electric parking brake switch (integration control and panel assembly) is pulled to the lock side, a lock request signal is output to the parking brake ECU assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
Note |
|---|---|---|---|---|---|
|
C13A3 |
Open or Short Circuit in Lock Switch Circuit |
All of following conditions are met:
HINT: *: This value is based on the assumption that the BECU terminal voltage is 11 V. The threshold changes according to the BECU terminal voltage. For details, refer to "Threshold Changes According to BECU Terminal Voltage". |
|
Yes |
An electric parking brake system malfunction is displayed on the multi-information display. |
|
C13AB |
Lock Switch Circuit Comparison |
Both of following conditions are met:
|
|
Yes |
An electric parking brake system malfunction is displayed on the multi-information display. |
DTC Detection Condition Combination Table: C13A3 (Pattern 1, Pattern 2, Pattern 3, Pattern 4)
|
Vehicle Condition |
|||||
|
Pattern 1 |
Pattern 2 |
Pattern 3 |
Pattern 4 |
||
|
Diagnosis Condition |
Electric parking brake switch (integration control and panel assembly) is operated to lock side with power switch off |
○ |
○ |
- |
- |
|
Power switch on (IG) |
- |
- |
○ |
○ |
|
|
Malfunction Status |
LCK1 terminal voltage is below 2.3 V |
○ |
- |
○ |
- |
|
LCK1 terminal voltage is 4.35 V or more |
- |
○ |
- |
○ |
|
|
Detection Time |
Approximately 1 second |
Approximately 1 second |
Approximately 1 second |
Approximately 1 second |
|
|
Trip Count |
1 trip |
1 trip |
1 trip |
1 trip |
|
HINT:
If the conditions match either of these patterns, a DTC will be output.
DTC Detection Condition Combination Table: C13A3 (Pattern 5, Pattern 6, Pattern 7, Pattern 8)
|
Vehicle Condition |
|||||
|
Pattern 5 |
Pattern 6 |
Pattern 7 |
Pattern 8 |
||
|
Diagnosis Condition |
Electric parking brake switch (integration control and panel assembly) is operated to lock side with power switch off |
○ |
○ |
- |
- |
|
Power switch on (IG) |
- |
- |
○ |
○ |
|
|
Malfunction Status |
LCK2 terminal voltage is below 1.4 V (*) |
○ |
- |
○ |
- |
|
LCK2 terminal voltage is above 9.0 V (*) |
- |
○ |
- |
○ |
|
|
Detection Time |
Approximately 1 second |
Approximately 1 second |
Approximately 1 second |
Approximately 1 second |
|
|
Trip Count |
1 trip |
1 trip |
1 trip |
1 trip |
|
HINT:
- If the conditions match either of these patterns, a DTC will be output.
-
*: This value is based on the assumption that the BECU terminal voltage is 11 V.
The threshold changes according to the BECU terminal voltage.
For details, refer to "Threshold Changes According to BECU Terminal Voltage".
Threshold Changes According to BECU Terminal Voltage
|
*a |
BECU Terminal Voltage (V) |
|
*b |
LCK2 Terminal Voltage (V) |
|
*c |
Normal Range |
|
*d |
DTC Detection Range |
DTC Detection Condition Combination Table: C13AB
|
Vehicle Condition |
|||
|
Pattern 1 |
Pattern 2 |
||
|
Diagnosis Condition |
Electric parking brake switch (integration control and panel assembly) is operated to lock side with power switch off |
○ |
- |
|
Power switch on (IG) |
- |
○ |
|
|
Malfunction Status |
Lock 1 switch and lock 2 switch ON/OFF evaluations do not match |
○ |
○ |
|
Detection Time |
Approximately 1 second |
Approximately 1 second |
|
|
Trip Count |
1 trip |
1 trip |
|
HINT:
If the conditions match either of these patterns, a DTC will be output.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The electric parking brake may still operate up to 20 seconds after the power switch is turned off. Before disconnecting connectors or fuses, turn the power switch off and wait 20 seconds or more.
- When the electric parking brake switch (integration control and panel assembly) is pulled and held for 1 second or more without being pulled fully to the lock side, one of the 2 linked contacts may turn on while the other one turns off causing this DTC to be stored (system is not malfunctioning).
- When replacing the parking brake ECU assembly, operate the electric parking brake switch (integration control and panel assembly) from the lock side to the release side, as the parking brake indicator light blinks when the power switch is first turned on (IG).
PROCEDURE
|
1. |
INSPECT ELECTRIC PARKING BRAKE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) |
(a) Remove the electric parking brake switch (integration control and panel assembly).
Click here
![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SWITCH: REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Inspect the electric parking brake switch (integration control and panel assembly).
Click here
| NG |
|
REPLACE ELECTRIC PARKING BRAKE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) |
|
|
2. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - ELECTRIC PARKING BRAKE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)) |
(a) Disconnect the G32 electric parking brake switch (integration control and panel assembly) connector.
(b) Disconnect the M35 parking brake ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M35-20 (LCK1) - G32-10 (LCK1) |
Always |
Below 5 Ω |
|
M35-15 (LCK2) - G32-21 (LCK2) |
Always |
Below 5 Ω |
|
M35-20 (LCK1) or G32-10 (LCK1) - Body ground |
Always |
10 kΩ or higher |
|
M35-15 (LCK2) or G32-21 (LCK2) - Body ground |
Always |
10 kΩ or higher |
|
G32-15 (E) - Body ground |
Always |
Below 5 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK DTC |
(a) Clear the DTCs.
Click here
Chassis > Electric Parking Brake > Clear DTCs
(b) Turn the power switch off.
(c) Turn the power switch on (IG).
(d) Perform a lock operation with the electric parking brake switch (integration control and panel assembly).
HINT:
When the electric parking brake switch (integration control and panel assembly) is pulled and held for 1 second or more without being pulled fully to the lock side, one of the 2 linked contacts may turn on while the other one turns off causing this DTC to be stored (system is not malfunctioning).
(e) Check for DTCs.
Click here
Chassis > Electric Parking Brake > Trouble Codes
| DTC is output |
|
| DTC is not output |
|
|
|