Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2.
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
AutoStick® (ERS) SWITCH
1. Turn the ignition off.
2. Disconnect the AutoStick® (ERS) Switch harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Does the scan tool display DTC: P0593-Autostick Input Circuit High?
  
  Yes
  - Replace the AutoStick® (ERS) Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
  No
  - Go To 3.
CHECK THE (T5) AUTOSTICK® (ERS) SIGNAL CIRCUIT FOR A SHORT TO THE (L900) HEADLAMP SWITCH MUX RETURN CIRCUIT

Fig 1: Check The Autostick ®(ERS) Signal Circuit For A Short To The Headlamp Switch MUX Return Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Measure the resistance between the (T5) AutoStick® (ERS) Signal circuit and the (L900) Headlamp Switch Mux Return circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T5) AutoStick® (ERS) Signal circuit for a short to the (L900) Headlamp Switch Mux Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
  No
  - Go To 4.
CHECK THE (T5) AutoStick® (ERS) SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 2: Check The Autostick® (ERS) Signal Circuit For A Short To Ground
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (T5) AutoStick® (ERS) Signal circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T5) AutoStick® (ERS) Signal circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
  No
  - Replace the Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.