Dakota Quad Cab 2WD V6-3.9L VIN X (2002)
If circuits are o.k, replace the cooling fan motor.
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With the ignition key "off" check for battery voltage at circuit C28 (relay terminal 30). If no battery voltage present check for open/shorted
circuit C28 between the PDC and relay.
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With the ignition key in the "run" position check for battery voltage at circuit F18 (relay terminal 86). If no battery voltage present, check for
open/short in circuit F18 between the junction block and the relay.
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If no problems are detected, install the DRB and start the engine. Clip a 12V test light to the battery positive terminal and probe circuit C27
(relay terminal 85). When the engine temperature reaches 110°C (230°F), or A/C is requested, the test light should light. If not, check circuit
C27 for open.
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If no problems are detected at this point, replace the cooling fan relay.
