LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 ((HVAC Systems - Electrical Diagnostics)) >> Electrical Diagnostics >> DTC Troubleshooting >> DTC 81: Blower Not On High At Start Of Cooldown Test (MTC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
BLOWER CONTROL NOT SET TO HIGH SPEED WHEN EXECUTING THE COOLDOWN TEST
BLOWER MOTOR / RELATED CIRCUITS
(C850) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO (Z908) GROUND CIRCUIT
(C850) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO (Z909) GROUND CIRCUIT
(C850) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO GROUND
(C850) BLOWER SWITCH POSITION SIGNAL CIRCUIT OPEN
A/C HEATER CONTROL
NOTE: This DTC will display as active if the ignition is not cycled after running the Cooldown Test. Otherwise, it will display as stored until cleared.
scientia non olet · About LEMON Manuals