RM35X0E _51 Engine / Hybrid System _078884 CRUISE CONTROL _0397572 DYNAMIC RADAR CRUISE CONTROL SYSTEM C

CRUISE CONTROL  DYNAMIC RADAR CRUISE CONTROL SYSTEM  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 engine switch is on (IG). 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

C419498E01
0.979,0.896 2.969,1.094 1.99,0.198 10 false STOP 0.885,1.396 2.875,1.594 1.99,0.198 10 false IG2 NO.1 1.76,2.25 3.75,2.448 1.99,0.198 10 false Stop Light Switch Assembly 1.76,2.104 3.75,2.302 1.99,0.198 10 false M2 2.156,0.74 2.313,0.938 0.156,0.198 10 false B 2.156,1.219 2.313,1.417 0.156,0.198 10 false B 2.156,1.74 2.615,1.938 0.458,0.198 10 false GND 2.75,0.604 2.906,0.802 0.156,0.198 10 false L 2.74,1.385 2.896,1.583 0.156,0.198 10 false L 1.969,0.625 2.635,0.865 0.667,0.24 10 false 7 1.969,1.125 2.833,1.417 0.865,0.292 10 false 6 1.979,1.625 2.573,1.885 0.594,0.26 10 false 2 2.927,0.5 3.531,0.729 0.604,0.229 10 false 3 2.927,1.302 3.531,1.51 0.604,0.208 10 false 5 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- 4.823,0.406 5.615,0.635 0.792,0.229 10 false 13*1 4.844,1.198 5.719,1.427 0.875,0.229 10 false 12*1 6.073,2.146 6.531,2.344 0.458,0.198 10 false ECM 0.76,3.292 3.781,3.552 3.021,0.26 10 false Skid Control ECU (Brake Actuator Assembly) 0.76,3.073 2.75,3.271 1.99,0.198 10 false A28 2.604,2.865 3.063,3.063 0.458,0.198 10 false STP 2.979,2.771 3.344,3.177 0.365,0.406 10 false 9 4.083,2.75 4.292,2.958 0.208,0.208 10 false 25 3.833,3.26 6.969,3.552 3.135,0.292 10 false Certification ECU (Smart Key ECU Assembly) 4.354,2.865 4.896,3.052 0.542,0.188 10 false STP1 3.844,3.073 4.26,3.281 0.417,0.208 10 false N155 0.74,4.333 5.031,4.698 4.292,0.365 10 false Shift Lock Control ECU (Shift Lock Control Unit Assembly) 0.75,4.156 2.74,4.354 1.99,0.198 10 false N161 2.979,3.781 3.521,3.969 0.542,0.188 10 false 4 2.615,3.906 3.073,4.104 0.458,0.198 10 false STP 4.885,0.604 5.198,0.802 0.313,0.198 10 false A2 4.906,1.406 5.219,1.604 0.313,0.198 10 false A2 5.26,0.406 5.875,0.604 0.615,0.198 10 false 16*2 5.271,1.198 5.885,1.396 0.615,0.198 10 false 15*2 5.333,0.604 5.646,0.802 0.313,0.198 10 false N1 5.323,1.396 5.635,1.594 0.313,0.198 10 false N1 4.771,3.823 7.063,4.021 2.292,0.198 10 false *1: for 1GD-FTV 4.771,4.135 7.063,4.333 2.292,0.198 10 false *2: for 7GR-FKS

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

Before replacing the ECM, refer to Service Bulletin.



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)
a.
C401044C44
1.479,0.302 1.875,0.521 0.396,0.219 0.875,1.938 1.375,1.271 true 1.479,1.927 1.979,1.26 true 2.198,1.125 2.698,0.458 true 0.146,0.135 0.458,0.292 0.313,0.156 10 false *a 0.479,1.865 0.938,2.063 0.458,0.198 10 false GND 1.323,1.865 1.781,2.063 0.458,0.198 10 false B 2.729,0.302 3.188,0.5 0.458,0.198 10 false B 1.563,0.344 2.021,0.542 0.458,0.198 10 false M2
*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
M2-2 (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
M2-7 (B) - Body ground Always 11 to 14 V
M2-6 (B) - Body ground Engine switch on (IG) 11 to 14 V
M2-6 (B) - Body ground Engine 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>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:

i.

Disconnect the A2 ECM connector.


ii.

Disconnect the M2 stop light switch assembly connector.


iii.

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


iv.

Disconnect the N155 certification ECU (smart key ECU assembly) connector.


v.

Disconnect the N161 shift lock control ECU (shift lock control unit assembly) connector.


vi.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A2-12 (ST1-) - M2-5 (L) Always Below 1 Ω
A2-13 (STP) - M2-3 (L) Always Below 1 Ω
A2-12 (ST1-) or M2-5 (L) - Body ground Always 10 kΩ or higher
A2-13 (STP) or M2-3 (L) - Body ground Always 10 kΩ or higher



vii.

Connect the N161 shift lock control ECU (shift lock control unit assembly) connector.


viii.

Connect the N155 certification ECU (smart key ECU assembly) connector.


ix.

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


x.

Connect the M2 stop light switch assembly connector.


xi.

Connect the A2 ECM connector.



b.

for 7GR-FKS:

i.

Disconnect the N1 ECM connector.


ii.

Disconnect the M2 stop light switch assembly connector.


iii.

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


iv.

Disconnect the N155 certification ECU (smart key ECU assembly) connector.


v.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N1-15 (ST1-) - M2-5 (L) Always Below 1 Ω
N1-16 (STP) - M2-3 (L) Always Below 1 Ω
N1-15 (ST1-) or M2-5 (L) - Body ground Always 10 kΩ or higher
N1-16 (STP) or M2-3 (L) - Body ground Always 10 kΩ or higher



vi.

Connect the N155 certification ECU (smart key ECU assembly) connector.


vii.

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


viii.

Connect the M2 stop light switch assembly connector.


ix.

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