| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B56S |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - 08/2021] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): P057162; Brake Switch "A" Signal Compare Failure; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021] | ||
|
DTC |
P057162 |
Brake Switch "A" Signal Compare Failure |
DESCRIPTION
When the brake pedal is depressed, the stop light switch assembly sends a signal to the hybrid vehicle control ECU. When the hybrid vehicle control ECU receives this signal, it cancels the dynamic radar cruise control. The fail-safe function operates to enable normal driving even if there is a malfunction in the stop light signal circuit. The cancellation condition occurs when voltage is applied to the terminal STP. When the brake is applied, voltage is normally applied to the terminal STP of the hybrid vehicle control ECU through the STOP fuse and the stop light switch assembly, and the hybrid vehicle control ECU turns the dynamic radar cruise control system off.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|---|
|
P057162 |
Brake Switch "A" Signal Compare Failure |
While the power switch is on (IG) and the dynamic radar cruise control system is operating, voltage of the STP terminal and that of the ST1- terminal of the hybrid vehicle control ECU are less than 1 V for approximately 0.5 seconds or more. |
|
Does not come on |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here
![2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND) |
|
(a) Disconnect the A33 stop light switch assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A33-2 (GND) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A33-7 (B) - Body ground |
Always |
11 to 14 V |
|
A33-6 (B) - Body ground |
Power switch on (IG) |
11 to 14 V |
|
A33-6 (B) - Body ground |
Power switch off |
Below 1 V |
(d) Connect the A33 stop light switch assembly connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
2. |
INSPECT STOP LIGHT SWITCH ASSEMBLY |
(a) Inspect the stop light switch assembly.
Click here
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the A23 and A24 hybrid vehicle control ECU connectors.
(b) Disconnect the A33 stop light switch assembly connector.
(c) Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
(d) Disconnect the K10 certification ECU (smart key ECU assembly) connector.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A24-28 (ST1-) - A33-5 (L) |
Always |
Below 1 Ω |
|
A23-15 (STP) - A33-3 (L) |
Always |
Below 1 Ω |
|
A24-28 (ST1-) or A33-5 (L) - Body ground |
Always |
10 kΩ or higher |
|
A23-15 (STP) or A33-3 (L) - Body ground |
Always |
10 kΩ or higher |
(f) Connect the K10 certification ECU (smart key ECU assembly) connector.
(g) Connect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
(h) Connect the A33 stop light switch assembly connector.
(i) Connect the A23 and A24 hybrid vehicle control ECU connectors.
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|