Cooling Box Circuit

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: Cooling Box Circuit
- Cooling Box Circuit

DESCRIPTION

When the cooler control switch sub-assembly is pushed, the blower motor sub-assembly and cooler magnet valve assembly controlled by the air conditioning amplifier assembly and air conditioning amplifier assembly (for the cooling box) operate. If the cooling box assembly does not operate when the cooler control switch sub-assembly is pushed, there may be a problem in the circuit shown below.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (COOLING BOX - BATTERY AND BODY GROUND)

(a) Disconnect the T4 cooling box connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - COOLING BOX)

(a) Disconnect the G13 and G12 amplifier connectors.

(b) Disconnect the T4 cooling box connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY

(a) Remove the cooler control switch sub-assembly Disassembly.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(c) Apply battery voltage to the cooler control switch sub-assembly connector and check that the cooler control switch sub-assembly illuminates.

OK:

NG -- REPLACE COOLER CONTROL SWITCH SUB-ASSEMBLY Disassembly
OK -- Continue to next step.

4. INSPECT BLOWER MOTOR SUB-ASSEMBLY

(a) Remove the blower motor sub-assembly Disassembly.

(b) Apply battery voltage to the blower motor sub-assembly and check that the blower motor sub-assembly operates smoothly.

OK:

NG -- REPLACE BLOWER MOTOR SUB-ASSEMBLY Disassembly
OK -- Continue to next step.

5. INSPECT NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY

(a) Remove the No. 1 cooler wiring harness sub-assembly Disassembly.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY Disassembly

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures