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AutoCodes - Generic - B1344

B1344 Code - Mode Actuator

- Code Popularity: 5,422 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Mar 14, 2019
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|Code B1344 Possible Causes

  • Faulty Mode Actuator
  • Mode Actuator harness is open or shorted
  • Mode Actuator circuit poor electrical connection
  • Faulty Instrument Panel Module (IPM)

|How do I Fix the Code B1344?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1344?

Labor: 1.0

The cost of diagnosing the B1344 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B1344 Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code B1344 Description

The Instrument Panel Module (IPM) controls the HVAC door actuators to regulate the airflow through the Heating, Ventilation, and Air Conditioning (HVAC) system. Each actuator is a 5-wire bi-directional electric motor that incorporates a feedback potentiometer. Ignition 3 voltage, low reference, control, 5-volt reference and position signal circuits enable the actuator to operate. The control circuit uses either a 0, 2.5, or 5-volt signal to command the actuator movement. When the actuator is at rest, the control circuit value is 2.5 volts. A 0 or 5-volt control signal commands the actuator movement in opposite directions. When the actuator shaft rotates, the potentiometer's adjustable contact changes the door position signal between 0-5 volts. The IPM converts the voltage values to count values where one volt is approximately equal to 51 counts. The IPM uses a range of 0-255 counts to index the actuator position. The door position signal voltage is converted to a 0-255 count range. When the module sets a commanded, or targeted value, the control signal is changed to either 0 or 5 volts depending upon the direction that the actuator needs to rotate to reach the commanded value. As the actuator shaft rotates the changing position signal is sent to the module. Once the position signal and the commanded value are the same, the module changes the control signal to 2.5 volts.

OBDII Code B1344 - Mode Actuator - AutoCodes.com
B1344 Code - Mode Actuator

|Need More Information on the B1344 Code?

Need more information on how to fix the B1344 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B1344 Code?

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|Code B1344 comments

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