C1078-TIRE REVOLUTIONS RANGE PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
Continuous.
- Set Condition:
Programmed value for tire size is not within acceptable range.
| Possible Causes |
| INCORRECT TIRE PRESSURE |
| INCORRECT TIRE SIZE |
| MISMATCHED TIRE BRANDS |
| INCORRECT VALUE PROGRAMMED INTO TOTALLY INTEGRATED POWER MODULE (TIPM) |
Diagnostic Test
1. ANTI–LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENTIgnition on, engine not running.
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 2
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.
Turn the ignition on.
With the scan tool, read and record DTCs.
With the scan tool, erase DTCs.
Cycle the ignition switch from off to on.
With the scan tool, read and record DTCs.
Does the scan tool display: C1078-TIRE REVOLUTIONS RANGE PERFORMANCE?
Yes
- Go To 3
No
- Go To5
3. INCORRECT VALUE PROGRAMMED INTO TIPM
| TIRE SIZE | BODY STYLE | ENGINE SIZE | SALES CODE | TIRE CIRCUMFERENCE (MM PER REV) |
| P205/70R 15 Dunlop SP50 | MK | ALL | TPB | 2112 |
| P215/60R 17 BSW AS Touring Firestone Affinity 3 | MK | ALL | TTU | 2087 |
| P215/55R 18 AS Performance Firestone Firehawk GTA 03 | MK | ALL | TT1 | 2115 |
| P215/60R 17 BSW Summer Performance Continental Premium Contact 2 | MK | ALL | TMQ | 2115 |
| P215/55R 18BSW Summer Performance Continental Premium Contact 2 | MK | ALL | TMZ | 2117 |
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 4
No
- Program the correct Tire/Wheel information in the TIPM.
- Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)
4. CHECK WHEEL SPEED SENSOR SIGNALS
Turn the ignition on.
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.
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 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)
No
- Repair as necessary.
- Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)
5. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
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 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)
No
- Test Complete.