TROUBLE DIAGNOSES — Contents / Symptom Chart
HA-38index tocContents
Trouble diagnoses — Contents
Symptom Chart
PageHA-38
Preliminary Check — PRELIMINARY CHECK (A/C does not blow cold air.)
PageHA-39
Harness Layout for A/C System
PageHA-40
Circuit Diagram for Quick Pinpoint Check
PageHA-41
Wiring Diagram
PageHA-42
Diagnostic Procedure 1 — SYMPTOM: Blower motor does not rotate.
PageHA-45
Diagnostic Procedure 2 — SYMPTOM: Magnet clutch does not operate when A/C switch and fan switch are ON.
PageHA-47
Electrical Components Inspection
PageHA-51
Control Linkage Adjustment
PageHA-52
Service data and specifications (S.D.S.)
PageHA-53
Symptom Chart
DIAGNOSTIC TABLE
Symptom chart — procedure mapping per symptom
A/C does not blow cold air.
Preliminary check 1● (1)
Diagnostic procedure 1○
Diagnostic procedure 2○
15A Fuses (Main power supply / ground)○
10A Fuse (Main power supply / ground)○
Thermo control amp.○
Blower motor
Resistor
A/C switch○
Fan switch○
A/C switch (second column)○
A/C relay○
Thermo control amp. (second column)○
Dual-pressure switch○
Compressor (Magnet clutch)○
E.C.C.S. control unit○
Blower motor does not rotate.
Preliminary check 1● (1)
Diagnostic procedure 1❷ (2)
Diagnostic procedure 2
15A Fuses (Main power supply / ground)○
10A Fuse (Main power supply / ground)
Thermo control amp.
Blower motor○
Resistor○
A/C switch
Fan switch○
A/C switch (second column)
A/C relay
Thermo control amp. (second column)
Dual-pressure switch
Compressor (Magnet clutch)
E.C.C.S. control unit
Magnet clutch does not operate when A/C switch and fan switch are ON.
Preliminary check 1● (1)
Diagnostic procedure 1
Diagnostic procedure 2❷ (2)
15A Fuses (Main power supply / ground)○
10A Fuse (Main power supply / ground)○
Thermo control amp.○
Blower motor
Resistor
A/C switch○
Fan switch○
A/C switch (second column)○
A/C relay○
Thermo control amp. (second column)○
Dual-pressure switch○
Compressor (Magnet clutch)○
E.C.C.S. control unit○
NOTE
Legend: ● and ❷ indicate the number means checking order. ○: As for checking order, refer to flow chart (it depends on malfunctioning portion).