HVAC Systems - Electrical Diagnostics: Other Dodge Dakota III

Monitor Conditions

1. When Monitored: During actuator calibration.

Set Conditions

1. Set Condition: If the total span of the Mode 2 (Floor to Defrost) Door is less than the low range limit.

Possible Causes

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Mode 2 (Floor to Defrost) Door exceeds the high range limit.

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting to drive this actuator. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored, it will stay in memory for 100 ignition cycles.

Note. The DTC must be active for the results of this test to be valid. Do not perform this test if the DTC is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C61) Blend Door Driver circuit is shorted to ground.

Scheme 5

Scheme 6

Scheme 7

1. 1) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C61) Blend Door Driver circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C61) Blend Door Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS Measure the resistance between the (C61) Blend Door Driver circuit and the (C29) Mode Door 1 Driver circuit, the (C801) Mode Door 2 Driver circuit, and the (C32) Recirculation Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms between the (C61) Blend Door Driver circuit and any of the other door driver circuits? Yes Repair the circuit(s) with a resistance below 10k ohms for a short to the (C61) Blend Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK BLEND DOOR ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 4) . No Go To step 5) .
4. 4) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Blend Door Actuator harness connector. Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C61) Blend Door Driver circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Blend Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN THE ACTUATOR DTC DETECTION TEST Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. With the scan tool, erase HVAC DTCs. 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 only display: B104D-BLEND DOOR CONTROL 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, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 8

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

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C61) Blend Door Driver circuit is shorted to voltage.

Scheme 9

1. 1) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C61) Blend Door Driver circuit. Is the voltage above 0.2 volts? Yes Repair the (C61) Blend Door Driver circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition off. Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B104E-BLEND DOOR CONTROL CIRCUIT HIGH? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 10

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

1. When Monitored: When actuator movement is requested.

1. Set Condition: If Blend Door Actuator's electrical circuit is open. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. DTC B104F must be active for the results of this test to be valid. Do not perform this test if DTC B104F is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 11

Scheme 12

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE 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 2) .
2. 2) CHECK BLEND DOOR ACTUATOR CIRCUIT RESISTANCE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance above 55 ohms? Yes Go To step 3) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
3. 3) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Disconnect the Blend Door Actuator harness connector. Measure the resistance of the (C61) Blend Door Driver circuit between the A/C Heater Control C1 harness connector and the Blend Door Actuator harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the (C61) Blend Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Blend Door Actuator harness connector. Is the resistance below 5.0 ohms? Yes Replace the Blend Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Repair the (C34) Common Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 13

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

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C32) Recirculation Door Driver circuit is shorted to voltage.

Scheme 14

1. 1) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C32) Recirculation Door Driver circuit. Is the voltage above 0.2 volts? Yes Repair the (C32) Recirculation Door Driver circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition off. Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B105A-RECIRCULATION DOOR CONTROL CIRCUIT HIGH? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 15

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

1. When Monitored: When actuator movement is requested.

1. Set Condition: If Recirculation Door Actuator's electrical circuit is open. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. DTC B105B must be active for the results of this test to be valid. Do not perform this test if DTC B105B is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 16

Scheme 17

Scheme 18

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE 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 2) .
2. 2) CHECK RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance above 55 ohms? Yes Go To step 3) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
3. 3) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR AN OPEN Disconnect the Recirculation Door Actuator harness connector. Measure the resistance of the (C32) Recirculation Door Driver circuit between the A/C Heater Control C1 harness connector and the Recirculation Door Actuator harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the (C32) Recirculation Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Recirculation Door Actuator harness connector. Is the resistance below 5.0 ohms? Yes Replace the Recirculation Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Repair the (C34) Common Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Recirculation Door is less than the low range limit.

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Recirculation Door exceeds the high range limit.

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C34) Common Door Driver circuit is shorted to ground.

Scheme 19

Scheme 20

Scheme 21

1. 1) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C34) Common Door Driver circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C34) Common Door Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK BLEND DOOR ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 3) . No Go To step 4) .
3. 3) CHECK (C61) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Blend Door Actuator harness connector. Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C61) Blend Door Driver Circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Blend Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 5) . No Go To step 6) .
5. 5) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Mode Door 1 (Floor to Panel) Actuator harness connector. Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C29) Mode Door 1 Driver Circuit for a short to the (C34) Common Door Driver circuit. 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. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
6. 6) CHECK MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 7) . No Go To step 8) .
7. 7) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Mode Door 2 (Floor to Defrost) Actuator harness connector. Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C801) Mode Door 2 Driver Circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Mode Door 2 (Floor to Defrost) Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
8. 8) CHECK RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 9) . No Go To step 10) .
9. 9) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Recirculation Door Actuator harness connector. Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C32) Recirculation Door Driver circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Recirculation Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
10. 10) RUN THE ACTUATOR DTC DETECTION TEST Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B105F-CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL 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, Other DTC(s) Displayed 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, And No DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C mode switch stays in a pushed position for more than two minutes. This DTC has a maturing time of two minutes and a de-maturing time of two seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Defrost mode switch stays in a pushed position for more than two minutes. This DTC has a maturing time of two minutes and a de-maturing time of two seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

1. When Monitored: With the ignition on.

1. Set Condition: If the Evaporator Temperature Sensor input is out of range toward the low voltage threshold, (A/D counts reach low threshold of 16). This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. DTC B1031 must be active for the results of this test to be valid. Do not perform this test if DTC B1031 is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 22

Scheme 23

Scheme 24

Scheme 25

Scheme 26

1. 1) CHECK FOR DTC B1031-EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT LOW WITH IN-LINE C202 HARNESS CONNECTOR DISCONNECTED Turn the ignition off. Disconnect the in-line C202 harness connector. Turn the ignition on. With the scan tool, erase HVAC DTCs. With the scan tool, read HVAC DTCs. Does the scan tool display: B1031-EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT LOW? Yes Go To step 2) . No Go To step 4) .
2. 2) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to ground between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO (C121) SENSOR GROUND Measure the resistance between the (C21) Evaporator Temperature Sensor Signal circuit and the (C121) Sensor Ground circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to the (C121) Sensor Ground circuit between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between ground and the Evaporator Temperature Sensor harness connector. Is the resistance below 10k ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to ground between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 5) .
5. 5) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO (C121) SENSOR GROUND Measure the resistance between the (C21) Evaporator Temperature Sensor Signal circuit and the (C121) Sensor Ground circuit in the Evaporator Temperature Sensor harness connector. Is the resistance below 10k ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to the (C121) Sensor Ground circuit between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Evaporator Temperature Sensor in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: With the ignition on.

1. Set Condition: If the Evaporator Temperature Sensor input is out of range toward the high voltage threshold, (A/D counts reach high threshold of 240). This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

1. 1) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C21) Evaporator Temperature Sensor Signal circuit. Is the voltage above 0.2 volts? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT, (C121) SENSOR GROUND CIRCUIT, & EVAPORATOR TEMPERATURE SENSOR Turn the ignition off. Measure the resistance between the (C21) Evaporator Temperature Sensor Signal circuit and the (C121) Sensor Ground circuit in the A/C Heater Control C1 harness connector. The approximate circuit resistance should be as follows: 1468 ohms @ 40°C (104°F) 1800 ohms @ 35°C (95°F) 2221 ohms @ 30°C (86°F) 2757 ohms @ 25°C (77°F) 3443 ohms @ 20°C (68°F) 4330 ohms @ 15°C (59°F) 5485 ohms @ 10°C (50°F) 6998 ohms @ 5°C (41°F) 7354 ohms @ 4°C (39°F) 7731 ohms @ 3°C (37°F) 8130 ohms @ 2°C (36°F) 8553 ohms @ 1°C (34°F) 9000 ohms @ 0°C (32°F) Is the resistance within the specifications? 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 3) .
3. 3) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Disconnect the in-line C202 harness connector. Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the (C21) Evaporator Temperature Sensor Signal circuit for an open between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (C121) Sensor Ground circuit between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Is the resistance below 5.0 ohms? Yes Go To step 5) . No Repair the (C121) Sensor Ground circuit for an open between the A/C Heater Control C1 harness connector and the in-line C202 (IP SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Is the resistance below 5.0 ohms? Yes Go To step 6) . No Repair the (C21) Evaporator Temperature Sensor Signal circuit for an open between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
6. 6) CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (C121) Sensor Ground circuit between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Is the resistance below 5.0 ohms? Yes Replace the Evaporator Temperature Sensor in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Repair the (C121) Sensor Ground circuit for an open between the Evaporator Temperature Sensor harness connector and the in-line C202 (HVAC SIDE) harness connector. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting to drive this actuator. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C29) Mode Door 1 Driver circuit is shorted to ground.

Scheme 32

Scheme 33

1. 1) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C29) Mode Door 1 Driver circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C29) Mode Door 1 Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C61) Blend Door Driver circuit, the (C801) Mode Door 2 Driver circuit, and the (C32) Recirculation Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms between the (C29) Mode Door 1 Driver circuit and any of the other door driver circuits? Yes Repair the circuit(s) with a resistance below 10k ohms for a short to the (C29) Mode Door 1 Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 4) . No Go To step 5) .
4. 4) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Mode Door 1 (Floor to Panel) Actuator harness connector. Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C29) Mode Door 1 Driver circuit for a short to the (C34) Common Door Driver circuit. 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. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN THE ACTUATOR DTC DETECTION TEST Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. With the scan tool, erase HVAC DTCs. 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 only display: B1041-PANEL MODE DOOR 1 CONTROL 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, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 34

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

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C29) Mode Door 1 Driver circuit is shorted to voltage.

Scheme 35

1. 1) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C29) Mode Door 1 Driver circuit. Is the voltage above 0.2 volts? Yes Repair the (C29) Mode Door 1 Driver circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition off. Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B1042-PANEL MODE DOOR 1 CONTROL CIRCUIT HIGH? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 36

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

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the Mode Door 1 (Floor to Panel) Actuator's electrical circuit is open. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. DTC B1043 must be active for the results of this test to be valid. Do not perform this test if DTC B1043 is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 37

Scheme 38

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE 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) CHECK MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR CIRCUIT RESISTANCE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance above 55 ohms? Yes Go To step 3) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
3. 3) CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR AN OPEN Disconnect the Mode Door 1 (Floor to Panel) Actuator harness connector. Measure the resistance of the (C29) Mode Door 1 Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 1 (Floor to Panel) Actuator harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the (C29) Mode Door 1 Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 1 (Floor to Panel) Actuator harness connector. Is the resistance below 5.0 ohms? 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 Repair the (C34) Common Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Mode 1 (Floor to Panel) Door is less than the low range limit.

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Mode 1 (Floor to Panel) Door exceeds the high range limit.

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting to drive this actuator. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C801) Mode Door 2 Driver circuit is shorted to ground.

Scheme 39

Scheme 40

1. 1) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C801) Mode Door 2 Driver circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C801) Mode Door 2 Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C32) Recirculation Door Driver circuit, the (C29) Mode Door 1 Driver circuit, and the (C61) Blend Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms between the (C801) Mode Door 2 Driver circuit and any of the other door driver circuits? Yes Repair the circuit(s) with a resistance below 10k ohms for a short to the (C801) Mode Door 2 Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 4) . No Go To step 5) .
4. 4) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO (C34) FRONT COMMON DOOR DRIVER CIRCUIT Disconnect the Mode Door 2 (Floor to Defrost) Actuator harness connector. Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C801) Mode Door 2 Driver circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Mode Door 2 (Floor to Defrost) Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN THE ACTUATOR DTC DETECTION TEST Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. With the scan tool, erase HVAC DTCs. 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 only display: B1047-FLOOR/DEFROST MODE DOOR CONTROL 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, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 41

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

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C801) Mode Door 2 Driver circuit is shorted to voltage.

Scheme 42

1. 1) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C801) Mode Door 2 Driver circuit. Is the voltage above 0.2 volts? Yes Repair the (C801) Mode Door 2 Driver circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition off. Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B1048-FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No, Other DTC(s) Displayed 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, And No DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 43

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

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the Mode Door 2 (Floor to Defrost) Actuator's electrical circuit is open. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. DTC B1049 must be active for the results of this test to be valid. Do not perform this test if DTC B1049 is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

Scheme 44

Scheme 45

1. 1) CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE 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) CHECK MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR CIRCUIT RESISTANCE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance above 55 ohms? Yes Go To step 3) . No Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
3. 3) CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR AN OPEN Disconnect the Mode Door 2 (Floor to Defrost) Actuator harness connector. Measure the resistance of the (C801) Mode Door 2 Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 2 (Floor to Defrost) Actuator harness connector. Is the resistance below 5.0 ohms? Yes Go To step 4) . No Repair the (C801) Mode Door 2 Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 2 (Floor to Defrost) Actuator harness connector. Is the resistance below 5.0 ohms? 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 Repair the (C34) Common Door Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Blend Door is less than the low range limit.

1. When Monitored: During actuator calibration.

1. Set Condition: If the total span of the Blend Door exceeds the high range limit.

1. When Monitored: When actuator movement is requested.

1. Set Condition: If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting to drive this actuator. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C32) Recirculation Door Driver circuit is shorted to ground.

Scheme 46

Scheme 47

1. 1) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C32) Recirculation Door Driver circuit between ground and the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C32) Recirculation Door Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C29) Mode Door 1 Driver circuit, the (C61) Blend Door Driver circuit, and the (C801) Mode Door 2 Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms between the (C32) Recirculation Door Driver circuit and any of the other door driver circuits? Yes Repair the circuit(s) with a resistance below 10k ohms for a short to the (C32) Recirculation Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 3) .
3. 3) CHECK RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 20 ohms? Yes Go To step 4) . No Go To step 5) .
4. 4) CHECK (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER CIRCUIT Disconnect the Recirculation Door Actuator harness connector. Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector. Is the resistance below 10k ohms? Yes Repair the (C32) Recirculation Door Driver circuit for a short to the (C34) Common Door Driver circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Replace the Recirculation Door Actuator in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
5. 5) RUN THE ACTUATOR DTC DETECTION TEST Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. With the scan tool, erase HVAC DTCs. 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 only display: B1059-RECIRCULATION DOOR CONTROL 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, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

Scheme 48

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

1. When Monitored: When the Actuator DTC Detection Test is executed.

1. Set Condition: If the (C34) Common Door Driver circuit is shorted to voltage.

Scheme 49

1. 1) CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C34) Common Door Driver circuit. Is the voltage above 0.2 volts? Yes Repair the (C34) Common Door Driver circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Go To step 2) .
2. 2) RUN THE ACTUATOR DTC DETECTION TEST Turn the ignition off. Reconnect the A/C Heater Control C1 harness connector. Turn the ignition on. 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 only display: B1060-CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT HIGH? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No, Other DTC(s) Displayed 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, And No Other DTCs Displayed Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: When the Cooldown Test is executed.

1. Set Condition: If the A/C system is unable to lower the evaporator temperature 11.11°C (20°F) within one minute.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control has an internal fault. This DTC has a maturing time of 5 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

Note. This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to *HVAC SYSTEM TEST for stored DTC test procedures.

1. When Monitored: Continuously

1. Set Condition: If the CAN B Bus (+) or CAN B Bus (-) circuit is open, shorted to voltage, or shorted to ground.

Scheme 50

Scheme 51

1. 1) VERIFY DTC U0019-CAN B BUS IS ACTIVE Turn the ignition on. With the scan tool, read HVAC DTCs. Does the scan tool display active: U0019-CAN B BUS? Yes Go To step 2) . No If the DTC is stored, check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
2. 2) CHECK FOR ACTIVE CAN B BUS RELATED DTCS IN THE FRONT CONTROL MODULE (FCM) With the scan tool, read Front Control Module (FCM) DTCs Does the scan tool display any active CAN B BUS related DTCs? Yes Diagnose and repair the DTC(s). «(Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING)»(ref-247630-S20117296642007020100000) . No Go To step 3) .
3. 3) CHECK (D55) CAN B BUS (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the negative battery cable. Disconnect the A/C Heater Control C1 harness connector. Disconnect the Front Control Module (FCM) C1 harness connector. Measure the resistance of the (D55) CAN B Bus (+) circuit between the Front Control Module C1 harness connector and the A/C Heater Control C1 harness connector. Is the resistance below 2.0 ohms? Yes Go To step 4) . No Repair the (D55) CAN B Bus (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
4. 4) CHECK (D54) CAN B BUS (-) CIRCUIT FOR AN OPEN Measure the resistance of the (D54) CAN B Bus (-) circuit between the Front Control Module C1 connector and the A/C Heater Control C1 harness connector. Is the resistance below 2.0 ohms? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Repair the (D54) CAN B Bus (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control looses communication with the Front Control Module (FCM). This DTC has a maturing time of 30 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

(Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic test procedure.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control looses communication with the Cluster (CCN). This DTC has a maturing time of 30 seconds and a de-maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.

(Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic test procedure.

1. When Monitored: When the Cooldown Test is executed.

1. Set Condition: If the A/C system is unable to lower the evaporator temperature 11.11°C (20°F) within one minute.

1. When Monitored: When the Cooldown Test is executed.

1. Set Condition: If either the blower speed was not set to high speed prior to starting the Cooldown Test or the blower speed was changed from high speed to another setting after starting the Cooldown test.

1. When Monitored: When the Cooldown Test is executed.

1. Set Condition: If a fault occurred with the Evaporator Temperature Sensor/sensor circuits.