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Test 25E - ATC RECIRCULATION Door Circuit

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Perform TEST 19A before proceeding with this test.
  1. Turn recirculation switch off. Turn panel switch on. With DRB in voltmeter mode, backprobe Dark Blue/White wire at Black BCM connector. Continue to observe voltmeter. Turn recirculation switch on. If voltage did not increase to higher than 10 volts, go to next step. If voltage increased to higher than 10 volts, go to step 4).
  2. Turn ignition off. Unplug BCM. Unplug 10-pin HVAC connector. With DRB in ohmmeter mode, probe Dark Blue/White wire at Black BCM connector. If resistance is less than 5 ohms, go to next step. If resistance is not less than 5 ohms, replace BCM. Perform VERIFICATION TEST.
  3. Read BCM INFORMATION. If display is BODY COMPUTER VERSION 1993, repair short to ground in Dark Blue/White wire, and replace BCM. Perform VERIFICATION TEST. If display is anything else, repair short to ground in Dark Blue/White wire. Perform VERIFICATION TEST.
  4. With DRB in voltmeter mode, backprobe Gray/Dark Blue wire at 10-pin HVAC connector, located near center of A/C-heater unit. Press recirculation switch while observing voltmeter. If voltage does not go higher than 10 volts, go to next step. If voltage goes higher than 10 volts, go to step 7).
  5. Turn ignition off. Unplug BCM. Unplug 10-pin HVAC connector. With DRB in ohmmeter mode, probe Gray/Dark Blue wire at Black BCM connector. If resistance is less than 5 ohms, repair short to ground on Gray/Dark Blue wire and replace BCM. Perform VERIFICATION TEST. If resistance is not less than 5 ohms, replace BCM. Perform VERIFICATION TEST.
  6. Read BCM INFORMATION. If display is BODY COMPUTER VERSION 1993, repair short to ground in Gray/Dark Blue wire and replace BCM. Perform VERIFICATION TEST. If display is anything else, repair short to ground on Gray/Dark Blue wire. Perform VERIFICATION TEST.
  7. Turn ignition off. Unplug BCM. With DRB in voltmeter mode, probe Gray/Dark Blue wire at Black BCM connector. If voltage is not higher than 10 volts, go to next step. If voltage is higher than 10 volts, go to step 9).
  8. Unplug 10-pin HVAC connector. Using external ohmmeter, measure resistance of Gray/Dark Blue wire between Black BCM connector and 10-pin HVAC connector. If resistance is not less than 5 ohms, repair open Gray/Dark Blue wire. If resistance is less than 5 ohms, inspect recirculation door for free movement. If door is okay, replace recirculation door actuator.
  9. Read BCM INFORMATION. If display is BODY COMPUTER VERSION 1993, repair short to voltage in Gray/Dark Blue wire and replace BCM. Perform VERIFICATION TEST. If display is anything else, repair short to voltage on Dark Blue/White wire. Perform VERIFICATION TEST.
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