Check Torque Control 1 Signal.

Turn ignition switch to ON (engine ON).

CHECK: Does the LED of torque control 1 signal light up? 

1. YES:  Go to step torque control 2 signal, see CHECK TORQUE CONTROL 2 SIGNAL  .
2. NO:  Check torque control 1 signal circuit, see DTC 38: TORQUE CONTROL SIGNAL  .