Diagnostic Test

2009 Jeep Compass Sport, 2.0 ASECTION Diagnostic Test
  1. CHECK FOR ACTIVE DTC 
    1. With the scan tool, read the DTC's.
    2. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
    3. With the scan tool, read the DTC's.

      Does the scan tool display this DTC as active?

      Yes 

      • Go to step  2

      No 

      • If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  2. TRANSMISSION RANGE SENSOR 
    Fig 1: Checking Transmission Range Sensor
    GC0100213Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Transmission Range Sensor harness connector.
    3. Turn the ignition on, wait 30 seconds.
    4. With the scan tool, read TIPM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      No 

      • Go to step  3
  3. ENGINE CONTROL MODULE (DIESEL) 
    1. Turn the ignition off.
    2. Disconnect the Diesel ECM C1 harness connector.
    3. Turn the ignition on, wait 30 seconds.
    4. With the scan tool, read TIPM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      No 

      • Go to step  4
  4. (F962) FUSED IGNITION SWITCH OUTPUT (START) CIRCUIT SHORT TO GROUND 
    Fig 2: Checking Fused Ignition Switch Output (Start) Circuit For Short To Ground
    GC0100214Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C5 connector.
    3. Measure the resistance between the (F962) Fused Ignition Switch Output (START) circuit and ground.

      Is the resistance below 10K ohms?

      Yes 

      No 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.