DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE

DETAILED FLOW
1.INTERVIEW CUSTOMER
Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
>> GO TO 3.
3.CHECK FOR DTCS
With CONSULT
Is any DTC detected? YES >> GO TO 4.
NO >> GO TO 5.
4.PERFORM DTC DIAGNOSTIC PROCEDURE
Perform the diagnostic procedure for the detected DTC. Refer to HAC-32, "DTC Inspection Priority Chart".
>> GO TO 7.
5.OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure".
>> GO TO 6.
6.SYMPTOM DIAGNOSIS
Check the symptom diagnosis table. Refer to HAC-96, "Diagnosis Chart By Symptom".
>> GO TO 8.
7.VERIFY REPAIR.
With CONSULT
Is any DTC detected? YES >> GO TO 4.
NO >> GO TO 8.
8.PERFORM FINAL OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure".
Does it operate normally? YES >> Inspection End.
NO >> GO TO 2.
OPERATION INSPECTION
Work Procedure
DESCRIPTION
The purpose of the operational check is to check that the individual system operates normally.
Conditions : Engine running at normal operating temperature
INSPECTION PROCEDURE
1.CHECK MEMORY FUNCTION
Is the inspection result normal? YES >> GO TO 2.
NO >> Check power and ground circuits for A/C auto amp. Refer to HAC-56, "Diagnosis Procedure".
2.CHECK BLOWER MOTOR SPEED
Is the inspection result normal? YES >> GO TO 3.
NO >> Check blower motor system. Refer to HAC-85, "Diagnosis Procedure".
3.CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)
NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection)
and intake door position is at
FRE (
) when the D/F (
) or DEF (
)
is selected.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check mode door system. Refer to HAC-80, "Diagnosis Procedure".
4.CHECK INTAKE AIR
)
switch. Indicator is turned ON.
)
switch. Indicator is turned ON.NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection)
and the FRE (
) switch is
pressed when the D/F (
) or DEF (
) is selected.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check intake door system. Refer to HAC-77, "Diagnosis Procedure".
5.CHECK A/C SWITCH
Confirm that the A/C compressor clutch engages (sound or visual inspection).
Is the inspection result normal? YES >> GO TO 6.
NO >> Check magnet clutch system. Refer to HAC-91, "Diagnosis Procedure".
6.CHECK TEMPERATURE DECREASE
Is the inspection result normal? YES >> GO TO 7.
NO >> Check for insufficient cooling. Refer to HAC-98, "Diagnosis Procedure".
7.CHECK TEMPERATURE INCREASE
Is the inspection result normal? YES >> GO TO 8.
NO >> Check for insufficient heating. Refer to HAC-99, "Diagnosis Procedure".
8.CHECK DUAL MODE FUNCTION
Is the inspection result normal? YES >> GO TO 9.
NO >> Refer to HAC-96, "Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
9.CHECK AUTO MODE
Is the inspection result normal? YES >> Inspection End.
NO >> Refer to HAC-96, "Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
SYSTEM SETTING
Temperature Setting Trimmer
Description
If the temperature felt by the customer is different than the airflow temperature controlled by the temperature setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting.
How to set
Using CONSULT, perform “TEMP SET CORRECT” in “WORK SUPPORT” of HVAC.

NOTE:
Foot Position Setting Trimmer
DESCRIPTION
In FOOT mode, the air blowing to DEF can change ON/OFF.
HOW TO SET
With CONSULT
Perform the “BLOW SET” of HVAC work support item.

NOTE: When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled.
Inlet Port Memory Function (FRE)
Description
) switch is set to ON
(fresh air intake),
“Perform the memory” or “Do not perform the memory” of the FRE (
) switch ON (fresh air intake) condition
can be selected.
) switch will be ON (fresh
air intake) when turning the ignition
switch to the ON position again.How to set
Using CONSULT, perform “FRE MEMORY SET” in “WORK SUPPORT” of HVAC.

NOTE: When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the FRE switch memory function may be cancelled.
Inlet Port Memory Function (REC)
Description
) switch is set to ON (recirculation),
“Perform the memory” or “Do not perform the memory” of the REC (
) switch ON (recirculation) condition
can be selected.
) switch will be ON (recirculation) when turning the ignition
switch to the ON position again.How to set
Using CONSULT, perform “REC MEMORY SET” in “WORK SUPPORT” of HVAC.

NOTE: When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the REC switch memory function may be cancelled.
Target Evaporator Temp Upper Limit
DESCRIPTION
Set the target evaporator temperature upper limit.
HOW TO SET
With CONSULT
Perform the “TARGET EVAPORATOR TEMP UPPER LIMIT SETTING” of HVAC work support item.

DOOR MOTOR STARTING POSITION RESET
Description
NOTE: During reset, DEF switch indicator blinks.
Work Procedure
1.PERFORM DOOR MOTOR STARTING POSITION RESET
With CONSULT
>> Inspection End.
Wiring diagram
DTC/circuit diagnosisCylinder block
Exploded View
Cylinder block
Top ring
Second ring
Oil ring
Snap ring
Piston
Connecting rod
Piston pin
Connecting rod bearing
Rear oil seal
Reinforcement plate
Drive plate
Signal plate
Pilot convert ...
C1109 power and ground system
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
C1109
BATTERY VOLTAGE
[ABNORMAL]
When ignition voltage is 10 V or less.
When ignition voltage is 16 V or more.
Harness or connector ...
Glove box lamp
Bulb Replacement
WARNING:
Do not touch the glass surface of a bulb while it is lit or right after being
turned OFF to prevent burns.
CAUTION:
Do not touch the glass of bulb directly by hand. Keep grease
and other oily substances away from
bulb surface.
Do not leave bulb ...