Diagnostic Flash Code Information
NOTE: The following flash codes 1 through 16 are On-Board Diagnostic (OBD) codes generated by the control module. If a system fault is detected, the control module will "flash out" the corresponding fault code on the electronic four-wheel drive Malfunction Indicator Lamp (MIL) on the instrument panel. Also, notice that all the codes that can be generated pertain only to the speed sensors, the clutch coil and clutch with the exception of the first flash code.
The electronic four-wheel drive system also includes the brake switch input, Park/Neutral Position (PNP) switch input, one power and two ground lines, along with the E-4WD MIL. The following pinpoint tests include testing on every electronic four-wheel drive circuit and not just those covered by the flash codes. DIAGNOSTIC FLASH CODE CHART
Flash Code Description Action to Take
—Inoperative or Erratic System Errors. Complete Tests AA through DD.
1 Microprocessor RAM (Random Access Memory) access error. Replace Control Module.
2 Clutch connector or clutch coil has discontinuity. GO to Step FF1.
3 Front output speed sensor connector or internal circuitry of sensor has discontinuity. Go to Step EE1.
4 Rear output speed sensor connector or internal circuitry of sensor has discontinuity. Go to Step EE1.
5 Both front and rear speed sensor connectors and/or internal circuitry of sensors have discontinuity. Go to Step EE1.
6 Clutch and front sensor connectors and/or clutch coil and/or internal circuitry of sensor have discontinuity. First see Step FF1, then Step EE1.
7 Clutch and rear sensor connectors and/or clutch coil and/or internal circuitry of sensor have discontinuity. First see Step FF1, then Step EE1.
8 Clutch and both sensor connectors and/or clutch coil and/or internal circuitry of sensors have discontinuity. First see Step FF1, then Step EE1.
9 Mechanical problem that allows clutch plates to slip during clutch engagement (or faulty sensor output signal). First see Step FF1, then Step EE1.
10 Both Code 9 and Code 2. See action for Code 9.
11 Both Code 9 and Code 3. See action for Code 9.
12 Both Code 9 and Code 4. See action for Code 9.
13 Both Code 9 and Code 5. See action for Code 9.
14 Both Code 9 and Code 6. See action for Code 9.
15 Both Code 9 and Code 7. See action for Code 9.
16 Both Code 9 and Code 8. See action for Code 9.
Regeneration (Recovery) of Flash Codes
If the ignition is turned OFF and the code is lost, the ignition will have to be turned ON again to regenerate codes 1 through 8, if the condition or conditions still exist. To regenerate codes 9 through 16, the vehicle must be driven again.