DTC Troubleshooting: B1241 (N and A/C ON)
  1. Connect the power transistor 4P connector No. 2 and No. 4 terminals with a jumper wire.
  1. Turn the ignition switch to ON (II).
Does the blower motor run at high speed?
YES -
Go to Step 15 .
NO -
Repair open in the GRN wire between the power transistor and the blower motor.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the jumper wire.
  1. Disconnect heater control unit connector B (12P).