1. INSPECT HEATER RADIATOR
If the fins are clogged, clean them with compressed air.
2. INSPECT BLOWER MOTOR OPERATION
Connect battery positive (+) lead to terminal 1 and battery negative (-) lead to terminal 2, then check that the motor rotates smoothly.
If operation is not as specified, replace the blower motor.
3. INSPECT AIR MIX SERVOMOTOR (DI-1354 )
4. INSPECT AIR MIX DAMPER POSITION SENSOR (DI-1345 )
Installation is in the reverse of removal (AC-47 ).
Reassembly is in the reverse of disassembly (AC-49 ).