Sidekick L4-1324cc 1.3L SOHC 5 Carb 8V (1989)
Coolant Temperature Sensor / Switch HVAC: Technical Service Bulletins
A/C Water Temperature Switch - Installation
TSB No.
TS 2-03 05059 (R)
Section Title:
Body Electrical
SUBJECT:
A/C WATER TEMPERATURE SWITCH INSTALLATION AND DIAGNOSTICS
MODEL:
SIDEKICK
YEAR:
1989
When installing the water temperature switch during an air conditioner installation, the following procedure must be observed to prevent switch damage:
Procedure
Tighten and torque the water temperature switch using only hand tools with a deep socket. Do not use seal tape as specified in A/C installation guide,
page 20. The water temp. switch normally grounds through its housing and the tape may prevent contact, causing the A/C system to be inoperative.
Caution
-
Do not install the switch using air tools.
-
Do not over torque the switch during installation.
-
Do not drop the switch or strike the switch in any way.
-
Do not use sealing tape on threads.
Symptoms of Failure
-
Compressor clutch does not engage.
-
Condenser fan motor does not turn off.
Troubleshooting and Testing
-
With the A/C system "on", connect the water temperature switch lead wire to ground. The compressor clutch should engage.
-
Using an Ohmmeter, check the switch at room temperature for continuity between the housing and terminal. If there is no continuity, the
switch is defective and must be replaced.
Fact
-
The switch contacts are normally closed, and open (break ground) only during an engine overheating condition.
