DTC Troubleshooting: B1241 (N and A/C ON)
DTC B1241 or DTC indicator N and A/C ON:
 A Problem in the Blower Motor Circuit
  1. Clear the DTC with the HDS.
  1. Turn the ignition switch to LOCK (0) and then to ON (II).
  1. Do the self-diagnostic function with the HDS or the heater control unit.
  1. Check for DTCs.
Is DTC B1241 or N and A/C ON indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure; check for loose wires or poor connections on the blower motor circuit.■
  1. Turn the ignition switch to LOCK (0).
  1. Check the No. 8 (40 A) fuse in the under-hood fuse/relay box, and the No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Are the fuses OK?
YES -
Go to Step 7 .
NO -
Replace the fuses, and recheck.■
  1. Connect the blower motor 2P connector No. 2 terminal to body ground with a jumper wire.
  1. Turn the ignition switch to ON (II).
Does the blower motor run?
YES -
Go to Step 9 .
NO -
Go to Step 25 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the jumper wire.
  1. Disconnect the power transistor 4P connector.