RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Turn the ignition on.
NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
Using a 12-volt test light connected to ground, back probe the (C7) Blower Motor Feed circuit in the Blower Motor harness connector.
Q: Does the test light illuminate brightly?
YES: Go To 6
NO: Go To 9
6. CHECK BLOWER MOTOR OPERATION BY BYPASSING THE A/C HEATER CONTROL
Turn the ignition off.
Connect a jumper wire between ground and the (C70) Blower Motor High Driver circuit in the Blower Motor harness connector.
Turn the ignition on.
Q: Does the blower motor run at high speed?
YES: Go To 7
NO: Replace the Blower Motor. Perform BODY VERIFICATION TEST - VER 1. See: Testing and Inspection/Diagnostic Trouble Code Tests
and Associated Procedures/Verification Tests/Body Verification Test
7. CHECK THE (C70) BLOWER MOTOR HIGH DRIVER CIRCUIT FOR AN OPEN
