RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Tests and Associated Procedures/Verification Tests/Body Verification Test
4. CHECK (E16) PANEL LAMPS DRIVER CIRCUIT FOR AN OPEN
Disconnect the A/C Heater Control C1 harness connector.
Disconnect the Cluster C1 harness connector.
Measure the resistance of the (E16) Panel Lamps Driver circuit between the A/C Heater Control C1 harness connector and the Cluster C1 harness
connector.
Q: Is the resistance below 5.0 ohms?
YES: Replace the Cluster. Perform BODY VERIFICATION TEST - VER 1. See: Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/Verification Tests/Body Verification Test
NO: Repair the (E16) Panel Lamps Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. See: Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
A/C Status Indicator Flashing
A/C STATUS INDICATOR FLASHING
Theory of Operation
Running the AC Cooldown test will cause the A/C status indicator to flash. If the test fails, the status indicator will continue to flash until either the test
returns passed or the ignition key is cycled. When the A/C status indicator is flashing, it will not indicate A/C operating status. However, the A/C
mode switch will continue to function normally. For vehicles equipped with EBL, when the A/C status indicator is flashing, the EBL status indicator
will not function. However, the EBL mode switch will continue to function normally.
POSSIBLE CAUSES
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A/C Cooldown test failed
1. PERFORM THE A/C COOLDOWN TEST
NOTE: The following are prerequisites of the Cooldown Test. Verify each of the following before running the test:
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Verify that no Evaporator Temperature Sensor related DTCs are not active. If active, diagnose and repair the DTC before proceeding.
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Verify that the refrigerant system has an adequate charge. Check and repair as necessary before proceeding.
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Verify that the blower motor operates correctly in all speeds. Diagnose and repair all blower related faults before proceeding.
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Verify that the work area ambient temperature is above 21.1° C (70° F) before proceeding. Move the vehicle to a warmer work area if
necessary.
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Verify that the evaporator temperature is above 12.7° C (55° F) before proceeding.
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Verify that the Mode Select control is set to the panel position.
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Verify that the A/C compressor is not running. If the compressor is running, turn the A/C off and allow the evaporator to warm up before
proceeding.
Start the engine.
Turn the Blower control to the high speed position.
With the DRBIII(R) in HVAC, select System Tests and then select AC Cooldown test. Allow one minute for the test to complete. One or more
