HVAC Systems - Electrical Diagnostics: Diagnosis Dodge Dakota III

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Test

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs first, all short low DTCs second, and all open DTCs last. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE DOOR TO SEIZE OR BIND Turn the ignition off. Inspect the actuator, linkage, and housing assembly for a condition causing the door to seize or bind. Are there any physical or mechanical problems with the door, housing, linkage, or actuator? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK MODE 2 (FLOOR TO DEFROST) DOOR TRAVEL Remove the Mode Door 2 (Floor to Defrost) Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over approximately 80 degrees. Does the door operate smoothly in both directions over approximately 80 degrees of travel? Yes Replace the Mode Door 2 (Floor to Defrost) Actuator in accordance with the Service Information. Then, Go To step 5) . No Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B104A-FLOOR/DEFROST MODE DOOR TRAVEL RANGE TOO SMALL? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs first, all short low DTCs second, and all open DTCs last. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) CHECK FOR A BROKEN MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR Turn the ignition off. Remove the Mode Door 2 (Floor to Defrost) Actuator from the A/C Heater Housing assembly. By hand, attempt to rotate the actuator in both directions. Does the actuator turn in either direction? Yes Replace the Mode Door 2 (Floor to Defrost) Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK MODE 2 (FLOOR TO DEFROST) DOOR & A/C HEATER HOUSING FOR WARPED, WORN, DAMAGED, MISSING, & BROKEN COMPONENTS Inspect for excessively worn, disconnected, missing, or broken door linkage. Inspect for a damaged or broken A/C Heater Housing Assembly. Inspect for a warped or broken door, and missing door seals. Rotate the door from stop to stop. The door should rotate approximately 80 degrees. Are there any physical or mechanical problems with the door or housing? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Mode 2 (Floor to Defrost) Actuator in accordance with the Service Information. Then, Go To step 5) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B104B-FLOOR/DEFROST MODE DOOR TRAVEL RANGE TOO LARGE? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition on. With the scan tool in HVAC, erase DTCs. With the scan tool, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Repair Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms.

Scheme 1

For the Manual Temperature Control (MTC) circuit diagram, (Refer to HEATING & AIR CONDITIONING - SCHEMATICS AND DIAGRAMS) .

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE DOOR TO SEIZE OR BIND Turn the ignition off. Inspect the actuator and the housing assembly for a condition causing the door to seize or bind. Are there any physical or mechanical problems with the door, housing, or actuator? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK RECIRCULATION DOOR TRAVEL Remove the Recirculation Door Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over approximately 90 degrees of travel. Does the door operate smoothly in both directions over approximately 90 degrees of travel? Yes Replace the Recirculation Door Actuator in accordance with the Service Information. Then, Go To step 5) . No Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B105C-RECIRCULATION DOOR TRAVEL RANGE TOO SMALL? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) CHECK FOR A BROKEN RECIRCULATION DOOR ACTUATOR Turn the ignition off. Remove the Recirculation Door Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the actuator in both directions. Does the actuator turn in either direction? Yes Replace the Recirculation Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK RECIRCULATION DOOR & A/C HEATER HOUSING FOR WARPED, WORN, DAMAGED, MISSING, & BROKEN COMPONENTS Inspect for a damaged or broken A/C Heater Housing Assembly, a warped, worn, or broken door, and missing door seals. Rotate the door from stop to stop. The door should rotate approximately 90 degrees. Are there any physical or mechanical problems with the door or housing? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Recirculation Door Actuator in accordance with the Service Information. Then, Go To step 5) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B105D-RECIRCULATION DOOR TRAVEL RANGE TOO LARGE? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) INSPECT THE A/C HEATER CONTROL FOR DAMAGE Inspect the A/C Heater Control for damage. Is the A/C Heater Control damaged? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE A/C MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION Inspect the A/C Heater Control for anything that would cause the A/C mode switch to stay or stick in a pushed position. Is anything present that would cause the A/C mode switch to stay or stick in a pushed position? Yes Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK FOR NORMAL A/C MODE SWITCH & STATUS INDICATOR FUNCTION Turn the ignition on. Turn the blower control on. Press the A/C mode switch on and off several times while observing the A/C status indicator. Does the A/C status indicator turn on and off with respect to the switch position? Yes Go To step 4) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) VERIFY THAT DTC B1001-A/C SWITCH REQUEST INPUT CIRCUIT LOW IS STILL ACTIVE Turn the blower control off. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait two minutes before proceeding. With the scan tool, read HVAC DTCs. Does the scan tool display active: B1001-A/C SWITCH REQUEST INPUT CIRCUIT LOW? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) INSPECT THE A/C HEATER CONTROL FOR DAMAGE Inspect the A/C Heater Control for damage. Is the A/C Heater Control damaged? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE REAR DEFROST MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION Inspect the A/C Heater Control for anything that would cause the Rear Defrost mode switch to stay or stick in a pushed position. Is anything present that would cause the Rear Defrost mode switch to stay or stick in a pushed position? Yes Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK FOR NORMAL REAR DEFROST MODE SWITCH & STATUS INDICATOR FUNCTION Turn the ignition on. Press the Rear Defrost mode switch on and off several times while observing the status indicator. Does the Rear Defrost status indicator turn on and off with respect to the switch position? Yes Go To step 4) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) VERIFY THAT DTC B1016-REAR DEFROST SWITCH REQUEST INPUT CIRCUIT LOW IS STILL ACTIVE With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait two minutes before proceeding. With the scan tool, read HVAC DTCs. Does the scan tool display active: B1016-REAR DEFROST SWITCH REQUEST INPUT CIRCUIT LOW? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 2

For the Manual Temperature Control (MTC) circuit diagram, (Refer to HEATING & AIR CONDITIONING - SCHEMATICS AND DIAGRAMS) .

If this DTC is active, refer to B104C-BLEND DOOR CONTROL CIRCUIT/PERFORMANCE for the diagnostic test procedure. If this DTC is stored, refer to *HVAC SYSTEM TEST for stored DTC test procedures.

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE DOOR TO SEIZE OR BIND Turn the ignition off. Inspect the actuator, linkage, and housing assembly for a condition causing the door to seize or bind. Are there any physical or mechanical problems with the door, housing, linkage, or actuator? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK MODE 1 (FLOOR TO PANEL) DOOR TRAVEL Remove the Mode Door 1 (Floor to Panel) Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over approximately 80 degrees of travel. Does the door operate smoothly in both directions over approximately 80 degrees of travel? Yes Replace the Mode Door 1 (Floor to Panel) Actuator in accordance with the Service Information. Then, Go To step 5) . No Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B1044-PANEL MODE DOOR 1 TRAVEL RANGE TOO SMALL? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) CHECK FOR A BROKEN MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR Turn the ignition off. Remove the Mode Door 1 (Floor to Panel) Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the actuator in both directions. Does the actuator turn in either direction? Yes Replace the Mode Door 1 (Floor to Panel) Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK MODE 1 (FLOOR TO PANEL) DOOR & A/C HEATER HOUSING FOR WARPED, WORN, DAMAGED, MISSING, & BROKEN COMPONENTS Inspect for excessively worn, disconnected, missing, or broken door linkage. Inspect for a damaged or broken A/C Heater Housing Assembly. Inspect for a warped or broken door, and missing door seals. Rotate the door from stop to stop. The door should rotate approximately 80 degrees. Are there any physical or mechanical problems with the door or housing? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Mode Door 1 (Floor to Panel) Actuator in accordance with the Service Information. Then, Go To step 5) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B1045-PANEL MODE DOOR 1 TRAVEL RANGE TOO LARGE? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

If this DTC is active, refer to B104C-BLEND DOOR CONTROL CIRCUIT/PERFORMANCE for the diagnostic test procedure. If this DTC is stored, refer to *HVAC SYSTEM TEST for stored DTC test procedures.

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE DOOR TO SEIZE OR BIND Turn the ignition off. Inspect the actuator, linkage, and housing assembly for a condition causing the door to seize or bind. Are there any physical or mechanical problems with the door, housing, linkage, or actuator? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK BLEND DOOR TRAVEL Remove the Blend Door Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over approximately 80 degrees of travel. Does the door operate smoothly in both directions over approximately 80 degrees of travel? Yes Replace the Blend Door Actuator in accordance with the Service Information. Then, Go To step 5) . No Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B1050-BLEND DOOR TRAVEL RANGE TOO SMALL? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No Go To step 3) .
3. 3) CHECK FOR A BROKEN BLEND DOOR ACTUATOR Turn the ignition off. Remove the Blend Door Actuator from the A/C Heater Housing Assembly. By hand, attempt to rotate the actuator in both directions. Does the actuator turn in either direction? Yes Replace the Blend Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 4) .
4. 4) CHECK BLEND DOOR & A/C HEATER HOUSING FOR WARPED, WORN, DAMAGED, MISSING, & BROKEN COMPONENTS Inspect for excessively worn, disconnected, missing, or broken door linkage. Inspect for a damaged or broken A/C Heater Housing Assembly. Inspect for a warped or broken door, and missing door seals. Rotate the door from stop to stop. The door should rotate approximately 80 degrees. Are there any physical or mechanical problems with the door or housing? Yes Repair as necessary in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Blend Door Actuator in accordance with the Service Information. Then, Go To step 5) .
5. 5) RUN ACTUATOR CALIBRATION TEST Turn the ignition on. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display: B1051-BLEND DOOR TRAVEL RANGE TOO LARGE? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

If this DTC is active, refer to B104C-BLEND DOOR CONTROL CIRCUIT/PERFORMANCE for the diagnostic test procedure. If this DTC is stored, refer to *HVAC SYSTEM TEST for stored DTC test procedures.

1. 1) CHECK FOR DTCs IN THE A/C HEATER CONTROL MODULE Turn the ignition on. With the scan tool, select ECU View. With the scan tool, select HVAC. Are any DTCs present in the A/C Heater Control Module? Yes Diagnose and Repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. Run the Cooldown Test again after the repair is complete. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK FOR DTCs IN THE PCM With the scan tool, select PCM. Are any DTCs present in the PCM? Yes Diagnose and repair the DTC(s). «(Refer to ENGINE - DIAGNOSIS AND TESTING)»(ref-247609-S03197655732007020100000) for PCM DTCs. Run the Cooldown Test again after the repair is complete. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Refer to the Service Information for additional Cooldown Test related diagnostic information and testing procedures. Run the Cooldown Test again after the repair is complete. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. 1) REPLACE THE A/C HEATER CONTROL Repair Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 3

For the Manual Temperature Control (MTC) circuit diagram, (Refer to HEATING & AIR CONDITIONING - SCHEMATICS AND DIAGRAMS) .

Refer to B1079-CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME for the diagnostic test procedure.

Refer to B1079-CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME for the diagnostic test procedure.

Refer to B1079-CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME for the diagnostic test procedure.

*HVAC SYSTEM TEST

For the Manual Temperature Control (MTC) circuit diagram, (Refer to HEATING & AIR CONDITIONING - SCHEMATICS AND DIAGRAMS) .

1. 1) HVAC SYSTEM TEST NOTE: Diagnose and repair all active DTCs before diagnosing and repairing stored DTCs. Make a selection based on the symptom, condition, or DTC that you want to diagnose. For Any Active DTC Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. Scan Tool Indicates HVAC Not Active On Bus «(Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING)»(ref-247630-S20117296642007020100000) for no response related diagnostic procedures. Complete HVAC System Test Go To step 2) . A/C System Performance Test Go To step 2) . Mode Switch & Door Actuator Ckt Test Go To step 3) . Actuator DTC Detection Test Go To step 4) . Actuator Calibration Test Go To step 5) .
2. 2) A/C SYSTEM PERFORMANCE TEST NOTE: The work area ambient temperature must be above 15.6°C (60°F) and the evaporator temperature must be above 18.3°C (65°F) in order to test A/C system performance. NOTE: Before actuating the Cooldown Test, verify that the mode setting is not in a defrost position and that the A/C compressor is not running. If the compressor is running, turn the A/C off and allow the evaporator to warm up before proceeding with the test. NOTE: Running the Cooldown test will cause the A/C status indicator to flash. NOTE: One or more status messages will display on the scan tool after running the Cooldown Test. These messages will clear after paging back out of this test function. Therefore, it is important to note all messages before doing so. Turn the ignition on. Set the mode to the Panel position. Verify that the blower motor operates correctly in all speeds. Diagnose and repair all blower related faults before proceeding with this test. Start the engine. Set the blower speed to high. With the scan tool in HVAC, select System Tests and then select Cooldown test. Allow the test to run to completion. Does the scan tool display a status message that indicates a fault has occurred? Yes, Conditions Too Cold - Test Not Run If running, turn the A/C compressor off. Verify that the work area ambient temperature is above 15.6°C (60°F). If not, move the vehicle to a warmer work area. Verify that the evaporator temperature is above 18.3°C (65°F). If not, set the blower to high speed and allow the blower to run for five minutes. Then, run the Cooldown Test again. Yes, Blowers Not On High - Test Not Run Set the blower speed to high speed and then run the Cooldown Test again. Yes, No Results Stored/Test Not Complete Verify that power is not interrupted while rerunning the Cooldown Test. Yes, Refrigerant Temperature Sensor Error Refer to «B1079-CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME»(ref-247653-S24930199962007020100000) for the diagnostic test procedure. Yes, DTC Set During Routine - Test Not Passed Refer to «B1079-CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME»(ref-247653-S24930199962007020100000) for the diagnostic test procedure. No As necessary, either Go To step 3) , step 4) , or step 5) , or Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
3. 3) MODE SWITCH & DOOR ACTUATOR CIRCUIT TEST NOTE: If at anytime a DTC becomes active during this test, proceed to the conclusion question. NOTE: If multiple DTCs become active, diagnose those that relate to a short circuit first. If not done so previously, start the engine. Set the blower speed to low. Set the Blend control to full cold. Set the Mode control to Bi-Level/Recirc. Monitor the scan tool for active HVAC DTCs while performing the following test steps. Press the A/C mode switch on, wait 30 seconds, press it off. Press the Rear Defrost mode switch on, wait 30 seconds, press it off. Set the Blend control to full hot, wait 30 seconds and then set it to full cold. Turn the Mode control to every door position. Leave it in each position for 30 seconds. Does the scan tool display any active DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of HVAC related symptoms. No If you are here due to a stored DTC, it is possible that a technician may not have erased the DTC following a repair. If possible, verify if the vehicle was recently in for this type of service. Otherwise, either Go To step 4) . or step 5) , or visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals, and repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) ACTUATOR DTC DETECTION TEST If not done so previously, start the engine. With the scan tool, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs. Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No If you are here due to a stored DTC, it is possible that a technician may not have erased the DTC following a repair. If possible, verify if the vehicle was recently in for this type of service. Otherwise, either Go To step 5) . or visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals, and repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) ACTUATOR CALIBRATION TEST If not done so previously, start the engine. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs. Does the scan tool display any DTCs? Yes Diagnose and repair the DTC(s). Refer to «DIAGNOSTIC CODE INDEX»(ref-247653-S28957204472007020100000) for a complete list of all HVAC related symptoms. No No problem found. However, if you are here due to a stored DTC, it is possible that a technician may not have erased the DTC following a repair. If possible, verify if the vehicle was recently in for this type of service. Otherwise, visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals, and repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

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