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Temperature Gauge Test

CAUTION: DO NOT  connect sender wire directly to ground during test.
  1. Disconnect temperature sender wire from sending unit. Connect a 12-volt 3.4-watt test bulb between connector terminal and ground. Turn ignition switch to "ON" position. Bulb should flash and temperature gauge needle should deflect.
  2. If results are okay, remove thermosensor (sending unit) from engine block and place sending unit in hot 158°F (70°C) water. Resistance readings should be 90-117 ohms at 158°F (70°C) and 20-26 ohms at 239°F (115°C) on all models.
  3. Remove instrument cluster from instrument panel. Measure resistance between temperature gauge terminals at rear of cluster. See TEMPERATURE GAUGE RESISTANCE  . SeeFig 1 to Fig 7 .
Fig 1: Montero Temperature Gauge Resistance Check Terminal ID
G103935
Fig 2: Galant Temperature Gauge Resistance Check Terminal ID
G102932
Fig 3: Van/Wagon Temperature Gauge Resistance Check Terminal ID
G103934
Fig 4: Mirage Temperature Gauge Resistance Check Terminal ID
G90C01374
Fig 5: Pickup Temperature Gauge Resistance Check Terminal ID
G103938
Fig 6: Starion Temperature Gauge Resistance Check Terminal ID
G103939
Fig 7: Sigma Temperature Gauge Resistance Check Terminal ID
G90B01378
TEMPERATURE GAUGE RESISTANCE

Application Terminals Resistance (Ohms)
Galant A-B 130
Galant A-C 53
Galant B-C 162
Mirage B-D 144-174
Mirage C-D 68-82
Mirage B-C 76-92
Montero No. 1-No. 2 55
Pickup 7V-TU 49-61
Sigma 1-2 49-61
Starion No. 1-No. 2 49-61
Van No. 1-No. 2 50-60
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