Cooling Box Control Switch Circuit
HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: Cooling Box Control Switch Circuit
Cooling Box Control Switch Circuit
DESCRIPTION
The cooler control switch sub-assembly is the activation switch for the cool box. If the cool box does not activate when the cooler control switch sub-assembly is pushed, there may be a malfunction in the circuit shown below.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. INSPECT FUSE (PANEL, A/C IG, ECU-B1)
(a) Remove the PANEL and A/C IG fuses from the cowl side junction block LH.
(b) Remove the ECU-B1 fuse from the engine room relay block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BATTERY)
(a) Disconnect the No. 1 cooler wiring harness sub-assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BODY GROUND)
(a) Disconnect the No. 1 cooler wiring harness sub-assembly connector.
(b) 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.
4. CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY (OPERATION)
(a) Replace the No. 1 cooler wiring harness sub-assembly with a normal one and check that the condition returns to normal.
OK:
Same problem does not occur.
NG -- INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY
OK -- REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY
5. 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 connector and check that the cooler control switch illuminates.
OK:
NG -- REPLACE COOLER CONTROL SWITCH SUB-ASSEMBLY
OK -- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Cool Box)