RM38N0EC _52 Drivetrain _119335 GF1A TRANSFER / 4WD / AWD _0524142 DYNAMIC TORQUE CONTROL AWD SYSTEM C

GF1A TRANSFER / 4WD / AWD  DYNAMIC TORQUE CONTROL AWD SYSTEM  C1296  ABS Malfunction  


DESCRIPTION

If a malfunction in the speed sensor signal circuit or yaw rate and acceleration sensor (airbag sensor assembly) circuit occurs, the 4WD ECU assembly will output this DTC.

The airbag sensor assembly has a built-in yaw rate and acceleration sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1296 ABS Malfunction When one of the following conditions is met:
1.

Wheel speed sensor malfunction is received from skid control ECU (brake actuator assembly)

2.

Yaw rate and acceleration sensor (airbag sensor assembly) malfunction is received from skid control ECU (brake actuator assembly)


·

Electronically controlled brake system (speed sensor circuit)

·

Skid control ECU (brake actuator assembly)

·

Yaw rate and acceleration sensor (airbag sensor assembly) circuit

·

4WD ECU assembly



DTC Detection Conditions: C1296
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition When communication occurs with the skid control ECU (brake actuator assembly) ○ ○
Malfunction Status Wheel speed sensor malfunction is received ○ -
Yaw rate and acceleration sensor (airbag sensor assembly) malfunction is received - ○
Detection Time - -
Number of Trips 1 trip 1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above is met.


WIRING DIAGRAM

C403112E09
0.594,2.927 1.969,3.177 1.375,0.25 10 false 4WD ECU Assembly 2.646,4.99 4.188,5.49 1.542,0.5 10 false Skid Control ECU (Brake Actuator Assembly) 0.219,4.823 2.365,5.208 2.146,0.385 10 false Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) 3.604,0.615 4.063,0.813 0.458,0.198 10 false FR+ 3.615,0.823 4.073,1.021 0.458,0.198 10 false FR- 3.979,0.5 4.438,0.698 0.458,0.198 10 false 21 3.979,0.698 4.438,0.896 0.458,0.198 10 false 26 4.958,0.479 5.323,0.802 0.365,0.323 10 false 1 4.969,0.708 5.333,1.031 0.365,0.323 10 false 2 4.875,1.042 5.333,1.24 0.458,0.198 10 false A41 4.875,1.188 6.448,1.51 1.573,0.323 10 false Front Speed Sensor RH 3.615,1.823 4.073,2.021 0.458,0.198 10 false FL+ 3.625,2.042 4.083,2.24 0.458,0.198 10 false FL- 3.979,1.708 4.438,1.906 0.458,0.198 10 false 24 3.99,1.938 4.448,2.135 0.458,0.198 10 false 7 4.958,1.719 5.417,1.917 0.458,0.198 10 false 1 4.969,1.927 5.427,2.125 0.458,0.198 10 false 2 4.865,2.26 5.323,2.458 0.458,0.198 10 false A42 4.865,2.417 6.427,2.688 1.563,0.271 10 false Front Speed Sensor LH 3.594,3.052 4.052,3.25 0.458,0.198 10 false RR+ 3.615,3.281 4.073,3.479 0.458,0.198 10 false RR- 3.99,2.938 4.448,3.135 0.458,0.198 10 false 22 3.99,3.146 4.448,3.344 0.458,0.198 10 false 37 3.604,4.271 4.063,4.469 0.458,0.198 10 false RL+ 3.625,4.49 4.083,4.688 0.458,0.198 10 false RL- 3.979,4.156 4.438,4.354 0.458,0.198 10 false 39 3.979,4.375 4.438,4.573 0.458,0.198 10 false 23 4.677,3.469 5.135,3.667 0.458,0.198 10 false j2 4.719,4.698 5.177,4.896 0.458,0.198 10 false k2 4.667,3.625 6.51,3.979 1.844,0.354 10 false Rear Skid Control Sensor RH 0.646,5.427 2.583,5.656 1.938,0.229 10 false : CAN Communication Line 4.969,2.948 5.427,3.146 0.458,0.198 10 false 2 4.969,3.156 5.427,3.354 0.458,0.198 10 false 1 4.979,4.375 5.438,4.573 0.458,0.198 10 false 1 4.979,4.156 5.438,4.354 0.458,0.198 10 false 2 5.156,0.604 5.615,0.802 0.458,0.198 10 false FR+ 5.156,0.802 5.615,1 0.458,0.198 10 false FR- 5.156,1.813 5.615,2.01 0.458,0.198 10 false FL+ 5.156,2.031 5.615,2.229 0.458,0.198 10 false FL- 5.146,3.042 5.667,3.26 0.521,0.219 10 false RA+ 5.146,3.26 5.677,3.469 0.531,0.208 10 false RA- 5.156,4.25 5.75,4.479 0.594,0.229 10 false LA+ 5.156,4.479 5.615,4.677 0.458,0.198 10 false LA- 4.708,4.844 6.51,5.271 1.802,0.427 10 false Rear Skid Control Sensor LH 2.656,4.823 3.115,5.021 0.458,0.198 10 false A40

PROCEDURE

1.CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
a.

Clear the DTC.

Chassis > Brake/EPB > Clear DTCs
50002 435

b.

Turn the ignition switch off.


c.

Turn the ignition switch to ON again.


d.

Drive the vehicle, accelerate to a speed of 20 km/h (12 mph) or more, and check if the speed sensor DTC (electronically controlled brake system DTC) is output.

Chassis > Brake/EPB > Trouble Codes
50001 435
Result:
Result Proceed to
Electronically controlled brake system DTC (speed sensor or acceleration sensor DTC) is not output A
Electronically controlled brake system DTC (speed sensor or acceleration sensor DTC) is output B


HINT:

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.




A

2.READ VALUE USING GTS (WHEEL SPEED)

B

REPAIR CIRCUIT INDICATED BY OUTPUT CODE (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>DIAGNOSTIC TROUBLE CODE CHART


2.READ VALUE USING GTS (WHEEL SPEED)
a.

Read the value displayed on the GTS.

Chassis > Four Wheel Drive > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
FR Wheel Speed Front wheel speed sensor RH reading Min.: 0 km/h (0 mph)
Max.: 326 km/h (202 mph) 		0 km/h (0 mph): Vehicle stopped No large fluctuations when driving at a constant speed.
FL Wheel Speed Front wheel speed sensor LH reading Min.: 0 km/h (0 mph)
Max.: 326 km/h (202 mph) 		0 km/h (0 mph): Vehicle stopped No large fluctuations when driving at a constant speed.
RR Wheel Speed Rear wheel speed sensor RH reading Min.: 0 km/h (0 mph)
Max.: 326 km/h (202 mph) 		0 km/h (0 mph): Vehicle stopped No large fluctuations when driving at a constant speed.
RL Wheel Speed Rear wheel speed sensor LH reading Min.: 0 km/h (0 mph)
Max.: 326 km/h (202 mph) 		0 km/h (0 mph): Vehicle stopped No large fluctuations when driving at a constant speed.
Chassis > Four Wheel Drive > Data List
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
50003 118 1,2,3,4
OK:

The speed value output from the speed sensor displayed on the GTS is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).



Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS (FORWARD AND REARWARD G)

NG

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


3.READ VALUE USING GTS (FORWARD AND REARWARD G)
a.

Read the value displayed on the GTS.

Chassis > Four Wheel Drive > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Forward and Rearward G Forward and Rearward G Min.: -25.10 m/s2
Max.: 24.90 m/s2 		Approximately 0 +/-0.13 m/s2 while stationary Changes in proportion with acceleration during acceleration/deceleration.
Chassis > Four Wheel Drive > Data List
Tester Display
Forward and Rearward G
50003 118 15
OK:

The yaw rate and acceleration sensor (airbag sensor assembly) output value is normal.



Result:
Proceed to
OK
NG



OK

REPLACE 4WD ECU ASSEMBLY

Click hereDrivetrain>GF1A (TRANSFER / 4WD / AWD)>4WD CONTROL ECU>REMOVAL


NG

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING