RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Perform the EOM Self Test. See: Accessories and Optional Equipment/Driver/Vehicle Information Display/Testing and
Inspection/Self-Diagnostic Test
The self test can be performed with the DRBIII(R) or manually using the following procedure:
Turn the ignition off.
Press and hold the RESET and C/T buttons.
Turn the ignition on.
Continue to hold both buttons until the software version is displayed, then release the buttons.
Observe the EOM display when the self test is complete.
Q: Did the EOM display "FAILED SELF TEST"?
YES: Replace and configure the Electronic Overhead module. Perform BODY VERIFICATION TEST - VER 1. See: Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Test Complete.
Temperature Display Inaccurate or Inoperative
TEMPERATURE DISPLAY INACCURATE OR INOPERATIVE
POSSIBLE CAUSES
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Ambient temperature sensor
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Electronic overhead module
1. AMBIENT TEMPERATURE SENSOR
NOTE:
-
Diagnose and repair any FCM, EOM, PCM, or Communication DTCs before proceeding with this test.
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The Ambient Temperature Sensor is hardwired to the FCM (Diesel), or to the PCM. Ambient temperature information is transmitted to the
EOM via the PCI Bus.
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Measure the resistance of the Ambient Temperature Sensor using the following temperature/resistance values:
10° C (50° F) Sensor Resistance = 17.99 - 21.81 Kilohms
20° C (68° F) Sensor Resistance = 11.37 - 13.61 Kilohms
25° C (77° F) Sensor Resistance = 9.12 - 10.88 Kilohms
30° C (86° F) Sensor Resistance = 7.37 - 8.75 Kilohms
40° C (104° F) Sensor Resistance = 4.90 - 5.75 Kilohms
50° C (122° F) Sensor Resistance = 3.33 - 3.88 Kilohms
Q: Is the Ambient Temperature Sensor resistance measurement within the min/max specifications?
YES: Go To 2
NO: Replace the Ambient Temperature Sensor. Perform BODY VERIFICATION TEST - VER 1. See: Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
2. ELECTRONIC OVERHEAD MODULE
