RM35X0E _51 Engine / Hybrid System _078884 CRUISE CONTROL _0383148 CRUISE CONTROL SYSTEM C

CRUISE CONTROL  CRUISE CONTROL SYSTEM  P057162  Brake Switch "A" Signal Compare Failure  


DESCRIPTION

When the brake pedal is depressed, the stop light switch assembly sends a signal to the ECM. When the ECM receives this signal, it cancels control of vehicle speed by the cruise control system. The fail-safe function operates to enable normal driving even if there is a malfunction in the stop light switch signal circuit. The cancellation condition occurs when voltage is applied to the terminal STP. When the brake pedal is depressed, voltage is applied to the terminal STP of the ECM through the STOP fuse and the stop light switch assembly, and the ECM cancels control of vehicle speed by the cruise control system.

DTC No. Detection Item DTC Detection Condition Trouble Area
P057162 Brake Switch "A" Signal Compare Failure When the ignition switch is to ON and the cruise control system is operating, the voltage of the STP and ST1- terminals of the ECM are less than 1.0 V for 0.5 seconds or more.
·

Stop light switch assembly

·

Harness or connector

·

ECM



WIRING DIAGRAM

for 1GD-FTV:
C414177E01
2.385,0.906 2.885,1.115 0.5,0.208 10 false STOP 2.323,1.406 3.073,1.635 0.75,0.229 10 false IG2 NO. 1 3.042,2.271 5.031,2.469 1.99,0.198 10 false Stop Light Switch Assembly 3.052,2.104 5.042,2.302 1.99,0.198 10 false M1 3.573,0.74 3.729,0.938 0.156,0.198 10 false B 3.573,1.219 3.729,1.417 0.156,0.198 10 false B 4.156,0.604 4.313,0.802 0.156,0.198 10 false L 4.167,1.385 4.323,1.583 0.156,0.198 10 false L 3.396,0.625 4.063,0.865 0.667,0.24 10 false 2 3.406,1.125 4.271,1.417 0.865,0.292 10 false 4 4.344,0.5 4.948,0.729 0.604,0.229 10 false 1 4.344,1.302 4.948,1.51 0.604,0.208 10 false 3 5.688,0.5 6.146,0.698 0.458,0.198 10 false STP 5.677,1.292 6.135,1.49 0.458,0.198 10 false ST1- 5.417,0.5 6.208,0.729 0.792,0.229 10 false 13 5.427,1.292 6.302,1.521 0.875,0.229 10 false 12 6.052,2.146 6.51,2.344 0.458,0.198 10 false ECM 5.719,2.146 6.635,2.365 0.917,0.219 10 false A2 2.135,3.229 4.948,3.438 2.813,0.208 10 false Skid Control ECU (Brake Actuator Assembly) 2.146,3.052 4.135,3.25 1.99,0.198 10 false A28 3.948,2.865 4.406,3.063 0.458,0.198 10 false STP 4.365,2.76 4.729,3.167 0.365,0.406 10 false 9 3.063,4.26 7.073,4.573 4.01,0.313 10 false Shift Lock Control ECU (Shift Lock Control Unit Assembly)*1 3.073,4.083 5.063,4.281 1.99,0.198 10 false N57 4.354,3.781 4.896,3.969 0.542,0.188 10 false 8 3.979,3.906 4.438,4.104 0.458,0.198 10 false STP 5,3.5 5.313,3.698 0.313,0.198 10 false *1 0.333,4.417 4.458,4.615 4.125,0.198 10 false *1: for Automatic Transmission

for 7GR-FKS:
C414177E02
2.385,0.917 2.979,1.156 0.594,0.24 10 false STOP 2.323,1.406 3.188,1.698 0.865,0.292 10 false IG2 NO. 1 3.042,2.271 5.031,2.469 1.99,0.198 10 false Stop Light Switch Assembly 3.052,2.104 5.042,2.302 1.99,0.198 10 false M1 3.573,0.74 3.729,0.938 0.156,0.198 10 false B 3.573,1.219 3.729,1.417 0.156,0.198 10 false B 4.156,0.604 4.313,0.802 0.156,0.198 10 false L 4.167,1.385 4.323,1.583 0.156,0.198 10 false L 3.396,0.625 4.063,0.865 0.667,0.24 10 false 2 3.406,1.125 4.271,1.417 0.865,0.292 10 false 4 4.344,0.5 4.948,0.729 0.604,0.229 10 false 1 4.344,1.302 4.948,1.51 0.604,0.208 10 false 3 5.688,0.5 6.146,0.698 0.458,0.198 10 false STP 5.677,1.292 6.135,1.49 0.458,0.198 10 false ST1- 5.417,0.5 6.208,0.729 0.792,0.229 10 false 16 5.427,1.292 6.302,1.521 0.875,0.229 10 false 15 6.052,2.146 6.51,2.344 0.458,0.198 10 false ECM 5.719,2.146 6.635,2.365 0.917,0.219 10 false N1 2.135,3.229 4.948,3.438 2.813,0.208 10 false Skid Control ECU (Brake Actuator Assembly) 2.146,3.052 4.135,3.25 1.99,0.198 10 false A28 3.948,2.865 4.406,3.063 0.458,0.198 10 false STP 4.365,2.76 4.729,3.167 0.365,0.406 10 false 9 3.073,4.271 7.073,4.594 4,0.323 10 false Shift Lock Control ECU (Shift Lock Control Unit Assembly)*1 3.073,4.083 5.063,4.281 1.99,0.198 10 false N57 4.354,3.781 4.896,3.969 0.542,0.188 10 false 8 3.979,3.906 4.438,4.104 0.458,0.198 10 false STP 5,3.5 5.313,3.698 0.313,0.198 10 false *1 0.333,4.417 4.458,4.615 4.125,0.198 10 false *1: for Automatic Transmission

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)
a.
E270489C24
1.479,0.302 1.875,0.521 0.396,0.219 2,1.115 2.5,0.448 true 2.073,1.49 2.615,0.844 true 0.146,0.135 0.458,0.292 0.313,0.156 10 false *a 2.51,0.271 2.969,0.469 0.458,0.198 10 false B 2.688,0.646 3.146,0.844 0.458,0.198 10 false B 1.552,0.333 2.01,0.531 0.458,0.198 10 false M1
*a Front view of wire harness connector
(to Stop Light Switch Assembly)


Disconnect the M1 stop light switch assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
M1-2 (B) - Body ground Always 11 to 14 V
M1-4 (B) - Body ground Ignition switch ON 11 to 14 V
M1-4 (B) - Body ground Ignition switch off Below 1 V



c.

Connect the M1 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>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.

for 1GD-FTV:

Disconnect the A2 ECM connector.


b.

for 7GR-FKS:

Disconnect the N1 ECM connector.


c.

Disconnect the M1 stop light switch assembly connector.


d.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


e.

for Automatic transmission:

Disconnect the N57 shift lock control ECU (shift lock control unit assembly) connector.


f.

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

Standard Resistance (for 1GD-FTV):
Tester Connection Condition Specified Condition
A2-12 (ST1-) - M1-3 (L) Always Below 1 Ω
A2-13 (STP) - M1-1 (L) Always Below 1 Ω
A2-12 (ST1-) or M1-3 (L) - Body ground Always 10 kΩ or higher
A2-13 (STP) or M1-1 (L) - Body ground Always 10 kΩ or higher


Standard Resistance (for 7GR-FKS):
Tester Connection Condition Specified Condition
N1-15 (ST1-) - M1-3 (L) Always Below 1 Ω
N1-16 (STP) - M1-1 (L) Always Below 1 Ω
N1-15 (ST1-) or M1-3 (L) - Body ground Always 10 kΩ or higher
N1-16 (STP) or M1-1 (L) - Body ground Always 10 kΩ or higher



g.

for Automatic transmission:

Connect the N57 shift lock control ECU (shift lock control unit assembly) connector.


h.

Connect the A28 skid control ECU (brake actuator assembly) connector.


i.

Connect the M1 stop light switch assembly connector.


j.

for 1GD-FTV:

Connect the A2 ECM connector.


k.

for 7GR-FKS:

Connect the N1 ECM connector.


Result:
Proceed to
OK
NG



OK

REPLACE ECM

for 1GD-FTV: Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECM>REMOVAL

for 7GR-FKS: Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR