Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is 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.
  No
  - Go To 2.
CHECK THE (Z913) GROUND CIRCUIT FOR AN OPEN

Fig 1: Measuring Resistance Between Ground And Ground Circuit
Courtesy of CHRYSLER GROUP, LLC

WARNING:
To avoid possible serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
1. Disconnect the Occupant Restraint Controller Module harness connectors.
2. Connect the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) to the ORC connectors.
3. Measure the resistance between ground and the (Z913) Ground circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 3.
  No
  - Repair the open in the (Z913) Ground circuit.
  - Refer to STANDARD PROCEDURE and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
CHECK THE (F100) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 2: Check Fused Ignition Run Control Output Circuit For Open
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Check the TIPM for any ignition related DTCs before proceeding. If set. Refer to DIAGNOSIS AND TESTING .

WARNING:
Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Using a 12-volt test light connected to ground, check the (F100) Fused Ignition Run Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4.
  No
  - Repair the open or short in the (F100) Fused Ignition Run Control Output circuit.
  - Refer to STANDARD PROCEDURE and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
CHECK THE (F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 3: Checking Fused Run/Start Relay Output Circuit For An Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to ground, check the (F201) Fused Ignition Run/Start Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5.
  No
  - Repair the open or short in the (F201) Fused Ignition Run/Start Control Output circuit.
  - Refer to STANDARD PROCEDURE and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
CHECK THE (D52) AND (D51) CAN C BUS CIRCUITS FOR AN OPEN

Fig 4: Checking CAN C BUS Circuits For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C1 harness connector.
4. Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C1 harness connector.
  Are the resistances below 5.0 Ohms?
  
  Yes
  - Replace the Occupant Restraint Controller Module in accordance with the Service Information. Refer to CONTROLLER, OCCUPANT RESTRAINT, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
  No
  - Repair the open in the (D52) or (D51) CAN C Bus circuit.
  - Refer to STANDARD PROCEDURE and perform the RESTRAINTS SYSTEM VERIFICATION TEST.