2012 Jeep Wrangler JK Factory Service Manual 28 - DTC-Based Diagnostics

B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT

B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT



For a complete wiring diagram, refer to the Wiring Information.



Possible Causes

BLOCKAGE STALLING BLOWER MOTOR
(C7) BLOWER MOTOR SUPPLY CIRCUIT SHORTED TO GROUND
BLOWER MOTOR
TOTALLY INTEGRATED POWER MODULE (TIPM)

1. VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE


1. Turn the ignition off.
2. Turn the Blower Motor controls to the off position.
3. Ignition on, engine not running.
4. With the scan tool, read and record TIPM DTCs.


NOTE: Record the Environmental Data for all DTCs before erasing. The Environmental Data can help in duplicating the conditions in which the DTC originally set.
5. With the scan tool, erase TIPM DTCs.
6. Turn the Blower Motor controls to high.

NOTE: It might take a few minutes of blower motor operation to reset this DTC.
7. With the scan tool, read TIPM DTCs.


Did this DTC reset?

Yes


No


2. CHECK THE BLOWER MOTOR


1. Turn the ignition off.
2. Disconnect the Blower Motor harness connector.


NOTE: Check connectors - Clean/repair as necessary.
3. Ignition on, engine not running.
4. With the scan tool, erase TIPM DTCs.
5. Cycle the ignition off for 30 seconds then back on to the run position.
6. With the scan tool, read TIPM DTCs.


Did this DTC reset?

Yes


No


3. CHECK (C7) BLOWER MOTOR SUPPLY CIRCUIT FOR A SHORT TO GROUND



1. Turn the ignition off.
2. Disconnect the TIPM C6 harness connector.
3. Measure the resistance between ground and the (C7) Blower Motor Supply circuit.


Is the resistance above 10k Ohms?

Yes


No