Last Modified: 11-13-2015 6.6 C Doc ID: RM000005VAE000X
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): C1337; Diameter
of the Tire is not Uniform; 2016 MY Tacoma [08/2015 - ]
DTC C1337 Diameter of the Tire is not Uniform
The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from the
speed sensors. These signals are used for recognizing whether all 4 wheels are operating properly. Therefore, all
wheel signals must indicate the same speed.
DETECTION ITEM DTC DETECTION CONDITION TROUBLE AREA
Diameter of the
Tire is not
The following occurs in 3 consecutive trips:
At a vehicle speed of 20 km/h (12 mph) or more,
there is a difference of 20% or more in the average
speed between the front wheels and rear wheels for
20 seconds or more.
Tire and wheel size
Skid control rotor
Speed sensor circuit
Skid control ECU
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store
system information .
1. CHECK DTC
(a) Check if any DTCs relating to the speed sensor circuit are output .
RESULT PROCEED TO
DTC is not output A
DTC is output B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS