RM35X0E _52 Drivetrain _078741 AC60E AUTOMATIC TRANSMISSION / TRANSAXLE _0385245 AUTOMATIC TRANSMISSION SYSTEM(for 7GR-FKS) C

AC60E AUTOMATIC TRANSMISSION / TRANSAXLE  AUTOMATIC TRANSMISSION SYSTEM(for 7GR-FKS)  P070312  Brake Switch "B" Circuit Short to Battery  


DESCRIPTION

The purpose of this circuit is to prevent the engine from stalling while driving in lock-up when the brakes are suddenly applied.

When the brake pedal is depressed, this switch sends a signal to the ECM. Then the ECM cancels the operation of the lock-up clutch while braking is in progress.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P070312 Brake Switch "B" Circuit Short to Battery Stop light switch remains on even when the vehicle is driven in a go (30 km/h (18.65 mph) or more) and stop (less than 3 km/h (1.86 mph)) pattern 5 times (2 trip detection logic).
·

Short in stop light switch signal circuit

·

Stop light switch assembly

·

ECM


Comes on DTC stored SAE Code:
P0724

MONITOR DESCRIPTION

This DTC indicates that the stop light switch remains on. When the stop light switch remains on during go and stop driving, the ECM interprets this as a fault in the stop light switch. Then the MIL illuminates and the ECM stores the DTC. The vehicle must go (30 km/h (18.65 mph) or more) and stop (less than 3 km/h (1.86 mph)) 5 times for 2 driving cycles in order for the DTC to be stored.

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


HINT:

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.


1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Start the engine.

7.

Repeat the following procedure 5 times:

-

Accelerate the vehicle to 30 km/h (18.65 mph) or more, depress the brake pedal and decelerate the vehicle to less than 3 km/h (1.86 mph).


8.

Stop the vehicle.

9.

Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

10.

Input the DTC: P070312.

11.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions


N/A
·

Unable to perform DTC judgment

·

Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.




WIRING DIAGRAM

C403374E04
1.24,2.146 2.313,2.344 1.073,0.198 10 false Battery 1.125,1.25 2.667,1.823 1.542,0.573 10 false Fusible Link Block Assembly (Main Battery) 2.698,1.26 3.313,1.458 0.615,0.198 10 false STOP 3.583,1.646 4.729,2.531 1.146,0.885 10 false Stop Light Switch Assembly 5.563,2.594 6.021,2.792 0.458,0.198 10 false N1 5.563,2.76 6.021,2.958 0.458,0.198 10 false ECM 5.365,0.99 5.823,1.188 0.458,0.198 10 false STP 5.083,0.99 5.396,1.188 0.313,0.198 10 false 16 4.542,1 4.698,1.198 0.156,0.198 10 false 3 3.49,1 3.646,1.198 0.156,0.198 10 false 7 3.719,1.115 4.177,1.313 0.458,0.198 10 false B 3.573,1.479 4.031,1.677 0.458,0.198 10 false M2 4.333,1.115 4.792,1.313 0.458,0.198 10 false L 0.135,0.125 2.521,0.365 2.385,0.24 12 false for LED Type:

C412713E02
1.24,2.146 2.313,2.344 1.073,0.198 10 false Battery 1.125,1.25 2.667,1.823 1.542,0.573 10 false Fusible Link Block Assembly (Main Battery) 2.698,1.26 3.313,1.458 0.615,0.198 10 false STOP 3.583,1.646 4.729,2.531 1.146,0.885 10 false Stop Light Switch Assembly 5.563,2.594 6.021,2.792 0.458,0.198 10 false N1 5.563,2.76 6.021,2.958 0.458,0.198 10 false ECM 5.365,0.99 5.823,1.188 0.458,0.198 10 false STP 5.083,0.99 5.396,1.188 0.313,0.198 10 false 16 4.542,1 4.698,1.198 0.156,0.198 10 false 1 3.49,1 3.646,1.198 0.156,0.198 10 false 2 3.719,1.01 4.177,1.208 0.458,0.198 10 false B 3.573,1.479 4.031,1.677 0.458,0.198 10 false M1 4.333,1.01 4.792,1.208 0.458,0.198 10 false L 0.135,0.125 2.708,0.365 2.573,0.24 12 false for Bulb Type:

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>AUTOMATIC TRANSMISSION SYSTEM (for 7GR-FKS)>PRECAUTION



PROCEDURE

1.READ VALUE USING GTS (STOP LIGHT SW)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Transmission / Data List / Stop Light SW.


e.

Read the Data List according to the display on the GTS.

Powertrain > Transmission > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Stop Light SW Stop light switch status ON or OFF
·

ON: Brake pedal depressed

·

OFF: Brake pedal released


-
Powertrain > Transmission > Data List
Tester Display
Stop Light SW
50003 373 12

Result:
Result Proceed to
Data List value is normal A
Data List value is not normal B



A

CHECK FOR INTERMITTENT PROBLEMS

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

2.CHECK STOP LIGHT SWITCH ASSEMBLY INSTALLATION
2.CHECK STOP LIGHT SWITCH ASSEMBLY INSTALLATION
a.

Check the stop light switch assembly installation.

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

OK:

Stop light switch assembly is installed correctly.



Result:
Proceed to
OK
NG



OK

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

NG

SECURELY REINSTALL STOP LIGHT SWITCH ASSEMBLY

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


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

Disconnect the stop light switch connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance (for LED Type):
Tester Connection Condition Specified Condition
M2-3 (L) or N1-16 (STP) - Other terminals Always 10 kΩ or higher


Standard Resistance (for Bulb Type):
Tester Connection Condition Specified Condition
M1-1 (L) or N1-16 (STP) - Other terminals Always 10 kΩ or higher



Result:
Result Proceed to
OK (for LED Type) A
OK (for Bulb Type) B
NG C



A

4.INSPECT STOP LIGHT SWITCH ASSEMBLY

B

5.INSPECT STOP LIGHT SWITCH ASSEMBLY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR