WINDSHIELD FOGGED [FULL-AUTO AIR CONDITIONER]

id0703c1700700

DESCRIPTION

•  A/C compressor does not operate while airflow mode is in DEFROSTER or DEF/HEAT modes

•  Air intake mode does not change to FRESH while airflow mode is in DEFROSTER or DEF/HEAT modes

POSSIBLE CAUSE

•  A/C compressor malfunction

•  ROOM 25 A fuse malfunction

•  INTERIOR1 15A fuse malfunction

•  Open circuit in wiring harness between climate control unit terminal 2A and positive battery terminal

•  Short to ground in wiring harness between climate control unit terminal 2A and ROOM 25 A fuse

•  Air intake actuator malfunction

•  Climate control unit connector malfunction

•  Air intake actuator malfunction

•  Climate control unit malfunction

•  Open circuit or short to ground or short to power supply in wiring harness between the following terminals:

L.H.D.:

―  Climate control unit terminal 1U — air intake actuator terminal C

―  Climate control unit terminal 1D — air intake actuator terminal D

―  Climate control unit terminal 1A — air intake actuator terminal E

―  Climate control unit terminal 2B — air intake actuator terminal A

―  Climate control unit terminal 2D — air intake actuator terminal B

R.H.D.:

―  Climate control unit terminal 1U — air intake actuator terminal E

―  Climate control unit terminal 1D — air intake actuator terminal D

―  Climate control unit terminal 1A — air intake actuator terminal C

―  Climate control unit terminal 2B — air intake actuator terminal B

―  Climate control unit terminal 2D — air intake actuator terminal A

•  Short to ground or short to power supply in wiring harness between the following terminals:

L.H.D.:

―  Climate control unit terminal 1A — driver-side air mix actuator terminal E

―  Climate control unit terminal 1U — driver-side air mix actuator terminal G

―  Climate control unit terminal 1A — passenger-side air mix actuator terminal G

―  Climate control unit terminal 1U — passenger-side air mix actuator terminal E

R.H.D.:

―  Climate control unit terminal 1A — driver-side air mix actuator terminal G

―  Climate control unit terminal 1U — driver-side air mix actuator terminal E

―  Climate control unit terminal 1A — passenger-side air mix actuator terminal E

―  Climate control unit terminal 1U — passenger-side air mix actuator terminal G

•  Short to ground or short to power supply in wiring harness between the following terminals:

―  Climate control unit terminal 1A — airflow mode actuator terminal A

―  Climate control unit terminal 1U — airflow mode actuator terminal B

―  Climate control unit terminal 1U — solar radiation sensor terminal A

•  Short to power supply in wiring harness between the following terminals:

―  Climate control unit terminal 1A — cabin temperature sensor terminal B

―  Climate control unitclimate control unit terminal 1A — evaporator temperature sensor terminal A

•  Air intake link malfunction

―  Lack of grease

―  Bad installation

•  Air intake door malfunction

―  Bad installation

―  Damage

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY THAT THERE IS COOL AIRFLOW

•  Switch the A/C switch ON.

•  Set the airflow volume control dial to 1 or more.

•  Is there cool airflow from the vent?

Yes

Go to the next step.

No

Go to the following malfunction symptom item.

(See NO COOL AIR [FULL-AUTO AIR CONDITIONER].)

2

PERFORM CLIMATE CONTROL UNIT DTC INSPECTION

•  Perform the climate control unit DTC inspection using the M-MDS.
(See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

•  Are any DTCs displayed?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

No

Go to the next step.

3

INSPECT AIR INTAKE LINK PART

•  Inspect the air intake actuator, air intake link for the following items.

―  Is grease on link?

―  Are links securely and properly installed?

―  Are links free of obstructions and hindrances?

•  Are the above items normal?

Yes

Inspect the air intake door for the following items.

•  Verify if there is no abnormal noise, cracks, or damage.

•  Are doors securely and properly installed?

If there is foreign matter, remove it or securely install the air intake door to the correct position.

If the air intake door is cracked or damaged, replace the air intake door.

Go to the next step.

No

Apply grease or securely install to the correct positions.

If there is a malfunction in the air intake link, replace the air intake link.

(See BLOWER UNIT DISASSEMBLY/ASSEMBLY.)

Go to the next step.

4

VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR

•  Does the malfunction symptom recur?

Yes

Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.

No

Troubleshooting completed.

Explain repairs to customer.

Step	Inspection		Action
1	VERIFY THAT THERE IS COOL AIRFLOW • Switch the A/C switch ON. • Set the airflow volume control dial to 1 or more. • Is there cool airflow from the vent?	Yes	Go to the next step.
1		No	Go to the following malfunction symptom item. (See NO COOL AIR [FULL-AUTO AIR CONDITIONER].)
2	PERFORM CLIMATE CONTROL UNIT DTC INSPECTION • Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) • Are any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
2		No	Go to the next step.
3	INSPECT AIR INTAKE LINK PART • Inspect the air intake actuator, air intake link for the following items. ― Is grease on link? ― Are links securely and properly installed? ― Are links free of obstructions and hindrances? • Are the above items normal?	Yes	Inspect the air intake door for the following items. • Verify if there is no abnormal noise, cracks, or damage. • Are doors securely and properly installed? If there is foreign matter, remove it or securely install the air intake door to the correct position. If the air intake door is cracked or damaged, replace the air intake door. Go to the next step.
3		No	Apply grease or securely install to the correct positions. If there is a malfunction in the air intake link, replace the air intake link. (See BLOWER UNIT DISASSEMBLY/ASSEMBLY.) Go to the next step.
4	VERIFY THAT MALFUNCTION SYMPTOM DOES NOT RECUR AFTER REPAIR • Does the malfunction symptom recur?	Yes	Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
4		No	Troubleshooting completed. Explain repairs to customer.