RM36D0EC _51 Engine / Hybrid System _083055 CRUISE CONTROL _0401000 DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Gasoline Model) C

CRUISE CONTROL  DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Gasoline Model)  P057162  Brake Switch "A" Signal Compare Failure  


DESCRIPTION

When the brake pedal is depressed, the stop light switch assembly outputs a signal to the ECM. The ECM uses this signal to control cancellation of vehicle speed by the dynamic radar cruise control. When the ECM determines that terminals STP and ST1- of the stop light switch assembly are both less than 1 V, DTC P057162 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
P057162 Brake Switch "A" Signal Compare Failure When the ignition switch is ON and the dynamic radar cruise control system is operating, the ECM detects that the voltage at terminal STP and ST1- are both less than 1 V for approximately 0.5 seconds or more.
·

Harness or connector

·

Stop light switch assembly

·

ECM


Cruise Control

WIRING DIAGRAM

A540652E03
0.49,0.563 2.479,0.76 1.99,0.198 10 false from Battery 2.396,0.719 4.385,0.917 1.99,0.198 10 false STOP 3.229,2.156 5.219,2.354 1.99,0.198 10 false Stop Light Switch Assembly 3.167,2 5.156,2.198 1.99,0.198 10 false A40 3.573,0.604 3.729,0.802 0.156,0.198 10 false B 3.573,1.094 3.729,1.292 0.156,0.198 10 false B 3.573,1.615 4.031,1.813 0.458,0.198 10 false GND 4.177,0.469 4.333,0.667 0.156,0.198 10 false L 4.177,1.271 4.333,1.469 0.156,0.198 10 false L 3.417,0.51 4.083,0.75 0.667,0.24 10 false 7 3.406,1 4.271,1.292 0.865,0.292 10 false 6 3.396,1.5 3.99,1.76 0.594,0.26 10 false 2 4.375,0.385 4.979,0.615 0.604,0.229 10 false 3 4.344,1.156 4.948,1.365 0.604,0.208 10 false 5 5.771,0.385 6.229,0.583 0.458,0.198 10 false STP 5.792,1.167 6.25,1.365 0.458,0.198 10 false ST1- 5.521,0.365 6.313,0.594 0.792,0.229 10 false 34 5.521,1.156 6.396,1.385 0.875,0.229 10 false 17 5.771,2.104 6.229,2.302 0.458,0.198 10 false ECM 5.75,1.948 6.969,2.313 1.219,0.365 10 false A125 3.167,3.021 4.688,3.406 1.521,0.385 10 false Skid Control ECU (Brake Actuator Assembly) 3.115,2.844 5.104,3.042 1.99,0.198 10 false A39 3.99,2.583 4.448,2.781 0.458,0.198 10 false STP 4.344,2.49 4.708,2.896 0.365,0.406 10 false 41 5.771,2.49 5.979,2.698 0.208,0.208 10 false 25 5.604,3 7.125,3.385 1.521,0.385 10 false Certification ECU (Smart Key ECU Assembly)*2 6.031,2.594 6.573,2.781 0.542,0.188 10 false STP1 5.615,2.813 6.031,3.021 0.417,0.208 10 false M7 3.073,4.24 5.063,4.688 1.99,0.448 10 false Shift Lock Control ECU (Shift Lock Control Unit Assembly) 3.083,4.104 5.073,4.302 1.99,0.198 10 false G27*1, G26*2 4.365,3.656 4.906,3.844 0.542,0.188 10 false 4 3.969,3.781 4.427,3.979 0.458,0.198 10 false STP 0.063,3.917 5.563,4.115 5.5,0.198 10 false *1: w/o Smart Entry and Start System 0.063,4.208 5.563,4.406 5.5,0.198 10 false *2: w/ Smart Entry and Start System 2.125,1.271 4.115,1.469 1.99,0.198 10 false ECU-IGP NO.3 0.396,1.063 2.385,1.26 1.99,0.198 10 false from IGP Relay

CAUTION / NOTICE / HINT

NOTICE:
·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

Before replacing the ECM, refer to the Service Bulletin.



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)
a.
A395526C26
1.479,0.302 1.875,0.521 0.396,0.219 0.792,1.823 1.292,1.156 true 1.469,1.844 1.969,1.177 true 2.26,1.156 2.76,0.49 true 0.146,0.135 0.458,0.292 0.313,0.156 10 false *a 0.615,1.844 1.073,2.042 0.458,0.198 10 false GND 1.427,1.844 1.885,2.042 0.458,0.198 10 false B 2.823,0.427 3.281,0.625 0.458,0.198 10 false B 1.563,0.344 2.021,0.542 0.458,0.198 10 false A40
*a Front view of wire harness connector
(to Stop Light Switch Assembly)


Disconnect the 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
A40-2 (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
A40-7 (B) - Body ground Always 11 to 14 V
A40-6 (B) - Body ground Ignition switch ON 11 to 14 V
A40-6 (B) - Body ground Ignition switch off Below 1 V



d.

Connect the stop light switch assembly connector.


Result:
Proceed to
OK
NG



OK

2.INSPECT STOP LIGHT SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.INSPECT STOP LIGHT SWITCH ASSEMBLY
a.

Inspect the stop light switch assembly.

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY)

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL


3.CHECK HARNESS AND CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY)
a.

Disconnect the A125 ECM connector.


b.

Disconnect the A40 stop light switch assembly connector.


c.

Disconnect the A39 skid control ECU (brake actuator assembly) connector.


d.

w/ Smart Entry and Start System:

Disconnect the M7 certification ECU (smart key ECU assembly) connector.


e.

w/o Smart Entry and Start System:

Disconnect the G27 shift lock control ECU (shift lock control unit assembly) connector.


f.

w/ Smart Entry and Start System:

Disconnect the G26 shift lock control ECU (shift lock control unit assembly) connector.


g.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A125-17 (ST1-) - A40-5 (L) Always Below 1 Ω
A125-34 (STP) - A40-3 (L) Always Below 1 Ω
A125-17 (ST1-) or A40-5 (L) - Body ground Always 10 kΩ or higher
A125-34 (STP) or A40-3 (L) - Body ground Always 10 kΩ or higher



h.

w/ Smart Entry and Start System:

Connect the G26 shift lock control ECU (shift lock control unit assembly) connector.


i.

w/o Smart Entry and Start System:

Connect the G27 shift lock control ECU (shift lock control unit assembly) connector.


j.

w/ Smart Entry and Start System:

Connect the M7 certification ECU (smart key ECU assembly) connector.


k.

Connect the A39 skid control ECU (brake actuator assembly) connector.


l.

Connect the A40 stop light switch assembly connector.


m.

Connect the A125 ECM connector.


Result:
Proceed to
OK
NG



OK

REPLACE ECM

for M20C-FKS:

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL

for M20D-FKS:

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR