RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Systems/Testing and Inspection/Diagnostic Trouble Code 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: Powertrain Management/Computers and Control
Systems/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: Powertrain
Management/Computers and Control Systems/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.
