2007 F-150 A/C issues
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2007 F-150 A/C issues
I have a 2007 F-150 Supercrew Lariat with a/c issues...coolant is fine and compressor is cycling...blows hot air when ever above 65 setting on the climate control...65 and below ice cold...anybody have any clues?
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Joined: Oct 2002
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From: St. Louis (Out in the woods)
Run the following self-test for the 2007 EATC and report the results:
HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will retrieve on-demand (hard fault) DTCs only, it will not retrieve continuous DTCs. Continuous DTCs can be cleared when exiting the self-test. Make sure to retrieve continuous DTCs by carrying out the HVAC Module — Electronic Automatic Temperature Control (EATC) — Retrieve Continuous DTCs procedure before clearing any DTCs.
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns.
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will detect concerns in the system control functions and will display on-demand (hard fault) DTCs for concerns that are present during the self-test. The vehicle interior temperature should be between 4°-38°C (40°-100°F) when carrying out the self-test. If the temperatures are not within the specified ranges, false DTCs may be displayed.
The self-test can be initiated after cycling the ignition switch from OFF to ON. Normal operation of the climate control system stops when the self-test is activated.
To enter the self-test, press the OFF and DEFROST buttons simultaneously and release, then press the AUTO button within 2 seconds. The display will show a flashing blower icon for 20 seconds, after which all vacuum fluorescent segments will be displayed if there are no on-demand DTCs present. If DTCs are present, the HVAC module — EATC will display "00 00" and then on-demand DTCs. Record all DTCs displayed.
If any DTCs appear during the self-test, carry out the diagnostic procedure. Refer to the HVAC Module — Electronic Automatic Temperature Control (EATC) DTC Chart and follow the ACTION for each DTC given.
If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart - Climate Control Systems Condition: The HVAC module — EATC System is Inoperative, Intermittent or Incorrect Operation.
To exit the self-test and retain all DTCs, press any button except DEFROST. The HVAC module — EATC will exit the self-test and retain all DTCs.
Always exit the self-test before powering the system down (system turned OFF). Once the self-test is exited, the ignition switch must remain ON for at least 30 seconds to allow the door actuators to automatically recalibrate.
If a condition exists, but no on-demand DTCs appear during the self-test, carry out the HVAC Module — Electronic Automatic Temperature Control (EATC) and HVAC Module — Dual Automatic Temperature Control (DATC) — Retrieve Continuous DTCs self test.
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will retrieve on-demand (hard fault) DTCs only, it will not retrieve continuous DTCs. Continuous DTCs can be cleared when exiting the self-test. Make sure to retrieve continuous DTCs by carrying out the HVAC Module — Electronic Automatic Temperature Control (EATC) — Retrieve Continuous DTCs procedure before clearing any DTCs.
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns.
The HVAC Module — Electronic Automatic Temperature Control (EATC) On-Demand Self Test will detect concerns in the system control functions and will display on-demand (hard fault) DTCs for concerns that are present during the self-test. The vehicle interior temperature should be between 4°-38°C (40°-100°F) when carrying out the self-test. If the temperatures are not within the specified ranges, false DTCs may be displayed.
The self-test can be initiated after cycling the ignition switch from OFF to ON. Normal operation of the climate control system stops when the self-test is activated.
To enter the self-test, press the OFF and DEFROST buttons simultaneously and release, then press the AUTO button within 2 seconds. The display will show a flashing blower icon for 20 seconds, after which all vacuum fluorescent segments will be displayed if there are no on-demand DTCs present. If DTCs are present, the HVAC module — EATC will display "00 00" and then on-demand DTCs. Record all DTCs displayed.
If any DTCs appear during the self-test, carry out the diagnostic procedure. Refer to the HVAC Module — Electronic Automatic Temperature Control (EATC) DTC Chart and follow the ACTION for each DTC given.
If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart - Climate Control Systems Condition: The HVAC module — EATC System is Inoperative, Intermittent or Incorrect Operation.
To exit the self-test and retain all DTCs, press any button except DEFROST. The HVAC module — EATC will exit the self-test and retain all DTCs.
Always exit the self-test before powering the system down (system turned OFF). Once the self-test is exited, the ignition switch must remain ON for at least 30 seconds to allow the door actuators to automatically recalibrate.
If a condition exists, but no on-demand DTCs appear during the self-test, carry out the HVAC Module — Electronic Automatic Temperature Control (EATC) and HVAC Module — Dual Automatic Temperature Control (DATC) — Retrieve Continuous DTCs self test.
HVAC Module — Electronic Automatic Temperature Control (EATC) — Retrieve Continuous DTCs
The HVAC module — electronic automatic temperature control (EATC) will retrieve only continuous (intermittent and hard) DTCs when carrying out this procedure.
Retrieval of continuous DTCs can be initiated after cycling the ignition switch from OFF to ON. Normal operation of the climate control system stops when retrieving continuous DTCs.
To retrieve continuous DTCs, press the OFF and DEFROST buttons simultaneously and release, then press the RECIRC button within 2 seconds. All vacuum fluorescent segments will be displayed if there are no continuous DTCs present. Continuous DTCs are indicated by the presence of the degrees Celsius symbol (°C) on the HVAC module — EATC display. Record all DTCs displayed.
NOTE: If continuous DTC(s) appear but the same DTC(s) do not appear during an on-demand self test, the fault may be intermittent in nature. Diagnosis should be conducted accordingly.
If any DTCs appear, carry out the diagnostic procedure. Refer to the HVAC Module — Electronic Automatic Temperature Control (EATC) DTC Chart and follow the ACTION for each DTC given.
If a condition exists but no DTCs appear, GO to Symptom Chart - Climate Control Systems Condition: The HVAC — EATC System is Inoperative, Intermittent or Incorrect Operation.
To exit and retain all continuous DTCs, press any button except DEFROST. The HVAC module — EATC will exit the retrieved continuous DTCs mode and retain all continuous DTCs.
To exit and clear all continuous DTCs, press the DEFROST button. The HVAC module — EATC will exit the retrieve continuous DTCs mode and all continuous DTCs will be cleared.
Always exit the procedure before powering the system down (system turned OFF). Once the procedure is exited, the ignition switch must remain ON for at least 30 seconds to allow the door actuators to automatically recalibrate.
Continuous DTCs will be deleted after 80 ignition switch ON cycles after the intermittent fault occurs.
The HVAC module — electronic automatic temperature control (EATC) will retrieve only continuous (intermittent and hard) DTCs when carrying out this procedure.
Retrieval of continuous DTCs can be initiated after cycling the ignition switch from OFF to ON. Normal operation of the climate control system stops when retrieving continuous DTCs.
To retrieve continuous DTCs, press the OFF and DEFROST buttons simultaneously and release, then press the RECIRC button within 2 seconds. All vacuum fluorescent segments will be displayed if there are no continuous DTCs present. Continuous DTCs are indicated by the presence of the degrees Celsius symbol (°C) on the HVAC module — EATC display. Record all DTCs displayed.
NOTE: If continuous DTC(s) appear but the same DTC(s) do not appear during an on-demand self test, the fault may be intermittent in nature. Diagnosis should be conducted accordingly.
If any DTCs appear, carry out the diagnostic procedure. Refer to the HVAC Module — Electronic Automatic Temperature Control (EATC) DTC Chart and follow the ACTION for each DTC given.
If a condition exists but no DTCs appear, GO to Symptom Chart - Climate Control Systems Condition: The HVAC — EATC System is Inoperative, Intermittent or Incorrect Operation.
To exit and retain all continuous DTCs, press any button except DEFROST. The HVAC module — EATC will exit the retrieved continuous DTCs mode and retain all continuous DTCs.
To exit and clear all continuous DTCs, press the DEFROST button. The HVAC module — EATC will exit the retrieve continuous DTCs mode and all continuous DTCs will be cleared.
Always exit the procedure before powering the system down (system turned OFF). Once the procedure is exited, the ignition switch must remain ON for at least 30 seconds to allow the door actuators to automatically recalibrate.
Continuous DTCs will be deleted after 80 ignition switch ON cycles after the intermittent fault occurs.
