Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT
NOTE: Check vehicle history for mismatched tire size, mini spare, and or incorrect tire size.
1. Ignition on, engine not running.
2. With the scan tool, select View DTCs in the ABS Module.
  Are there any ABS DTCs present?
  
  Yes
  - Refer to the symptom list and perform any ABS DTC diagnostic procedures before continuing with this test.
  No
  - Go to step 2
CHECK FOR A DTC C1078-TIRE REVOLUTIONS RANGE PERFORMANCE
NOTE: This DTC must be active for the results of this test to be valid.
1. Turn the ignition on.
2. With the scan tool, read and record DTCs.
3. With the scan tool, erase DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read and record DTCs.
  Does the scan tool display: C1078-TIRE REVOLUTIONS RANGE PERFORMANCE?
  
  Yes
  - Go to step 3
  No
  - Go To step 5

INCORRECT VALUE PROGRAMMED INTO TIPM

TIRE SIZE	BODY STYLE	ENGINE SIZE	SALES CODE	TIRE CIRCUMFERENCE
P205/70R 16 BSW Good Year All Season	MK	ALL	TLB	2112mm (83in)
P215/60R 17 BSW Continental Summer Performance	MK	ALL	TMQ	2115mm (83in)
P215/55R 18 BSW Continental Summer Performance	MK	ALL	TMZ	2117mm (83in)
P215/65R 17 OWL Good Year All Terrain	MK	ALL	TRX	2117mm (83in)
P215/60R 17 BSW Firestone AS Touring	MK	ALL	TTU	2087mm (82in)
P215/55R 18 BSW Firestone AS Performance	MK	ALL	TT1	2115mm (83in)

Verify the correct tire/wheel information is programmed in the TIPM.
Is the correct value programmed in the TIPM according to the chart?

Yes
- Go to step 4
No
- Program the correct Tire/Wheel information in the TIPM.
- Perform AWD Control Module VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, All Wheel Drive (AWD) - Standard Procedure

CHECK WHEEL SPEED SENSOR SIGNALS
1. Turn the ignition on.
2. With the scan tool, monitor and graph ALL the Wheel Speed Sensor speeds and compare graph while an assistant drives the vehicle.
  NOTE: If graph shows periodic dropouts pay close attention to the tone wheel.
3. Slowly accelerate as straight as possible from a stop to 40 km/h (25 mph).
  Are all the Wheel Speed Sensors reading the same?
  
  Yes
  - Test complete.
  - Perform AWD Control Module VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, All Wheel Drive (AWD) - Standard Procedure
  No
  - Repair as necessary.
  - Perform AWD Control Module VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, All Wheel Drive (AWD) - Standard Procedure
INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform AWD Control Module VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, All Wheel Drive (AWD) - Standard Procedure
  No
  - Test Complete.