Service Manual

16
ECO Defender Series
Chamber Sensor Testing
Step 1. Rotate the gas control knob to
the “OFF” position.
Step 2. Disconnect the chamber sensor wire
harness from the gas control.
Step 3. Remove the chamber door temperature
sensor from the right side inner door
(Phillips screw driver).
Step 4. Make sure that the ring terminal of the chamber door
temperature sensor is not touching any surface. Using a multi-meter set to the
ohms setting, insert one-meter probe (see caution) into each of the wire
positions (see photo).
Step 5. Measure the ambient air temperature near the sensor. Compare the ambient
temperature range to the expected resistance range on the chart below.
that resistance increases as temperature decreases.
Note
Sensor Resistance at Various Temperatures
Temperature Range (°F) Resistance Range (kOhms)
41-50 279-175
50-59 219-139
59-68 173-112
68-77 137-90
77-86 110-72
86-104 89-59
104-113 73-48
113-122 60-39
122-131 49-32
CAUTION
DO NOT use standard multimeter
probes for this test. Doing so will
damage connector. Use special
pin type electronic probes or
small diameter wire pins inserted
into connector.
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