ELECTRICAL SYSTEM
Sender unit (engine coolant temperature) 1. Apply an ohmmeter between the terminal and body of the sender unit and check for continuity (resistance value).
Body
Terminal
2. Replace the sender unit if there is no continuity or the measured resistance value is outside the standard resistance value. Notice: The illustration is for a gasoline-engine truck. 208546
Gasoline-engine truck
Temperature [°C (°F)] Standard resistance value (ohm)
60±0.2 (140±0.4)
65±0.2 (149±0.4)
80±0.2 (176±0.4)
100±0.3 (212±0.5)
115±0.3 (239±0.5)
125±0.3 (257±0.5)
130±0.3 (266±0.5)
80±10
64±7.8
40.6±3.7
22.2±1.4
14.6±0.6
11.3±0.6
10±0.6
Diesel-engine truck
Temperature [°C (°F)] Standard resistance value (ohm)
50±0.2 (122±0.4)
60±0.2 (140±0.4)
80±0.2 (176±0.4)
100±0.3 (212±0.5)
106±0.3 (223±0.5)
120±0.3 (248±0.5)
80±10
56.3±5
29.5±2.5
16.5±0.9
14.3±0.5
10±0.3
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