Transfer Case Control Module DTC Descriptions

Transfer Case Control Module (TCCM) Diagnostic Trouble Code (DTC) Descriptions
Name of DTC: 2WD/AWD Indicator Open
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects an open in the 2WD/AWD indicator circuit.

Name of DTC: 2WD/AWD Indicator Short To Ground
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects short to ground in the 2WD/AWD indicator circuit.

Name of DTC: Neutral Indicator Open
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects an open in the Neutral indicator circuit.

Name of DTC: Neutral Indicator Short To Ground
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects short to ground in the Neutral indicator circuit.

Name of DTC: 4WD LO Indicator Open
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects an open in the 4WD LO indicator circuit.

Name of DTC: 4WD LO Indicator Short To Ground
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects short to ground in 4WD LO indicator circuit.

Name of DTC: 4WD HI Indicator Open
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects an open in the 4WD HI indicator circuit.

Name of DTC: 4WD HI Indicator Short To Ground
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects short to ground in the 4WD HI indicator circuit.

Name of DTC: 12 Volt Over Voltage
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects that the system power has exceeded 16.0 volts for 2 seconds.

Name of DTC: 12 Volt Under Voltage
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects that the system power has dropped below 9.0 volts for 2 seconds.

Name of DTC: 5 Volt Over Voltage
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects that the Mode Sensor and Selector Switch supply power has exceeded 6.0 volts for 20 seconds.

Name of DTC: 5 Volt Under Voltage
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects that the Mode Sensor and Selector Switch supply power has dropped below 4.0 volts for 20 seconds.

Name of DTC: Internal Error
When monitored: Continuously with key on.
Set condition: This DTC is set whenever the Transfer Case Control Module (TCCM) detects an EE Checksum Error or a Flash Checksum Error.

Name of DTC: Transfer Case Selector Switch Error
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects a Selector Switch input of less than 250 ohms or more than 14.5 ohms. This Diagnostic Trouble Code (DTC) will also set whenever TCCM detects a Selector Switch input of .25 volts or less, or 5 volts or more.

Name of DTC: Transfer Case Mode Sensor Error
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects any of the following conditions:
1 The Mode Sensor has an incorrect transition during a shift, then attempts and fails 2 times to default to 4WD HI position.
2 An invalid Mode Sensor position.
3 The Mode Sensor has 4 bad transitions during one ignition cycle.

Name of DTC: Selector Switch/Transfer Case mismatch
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects a Selector Switch Resistance that indicates it is not consistent with the Transfer Case Type coded in the TCCM.

Name of DTC: Shift Motor A/B Short To Voltage
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) detects short to voltage in the Shift Motor Control circuit A or B.

Name of DTC: Shift Blocked Error
When monitored: Continuously with key on.
Set condition: Transfer Case cannot reach the intended Transfer Case position. The Transfer Case Control Module detects 5 consecutive ignition cycles with 5 - blocked shift attempts each.

Name of DTC: Missing Brake Input
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Vehicle Speed Input
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Engine RPM Input
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Ignition Message
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Lamp Dimming Message
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Transmission Temperature Message
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing VIN Information
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Transfer Case Type
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.

Name of DTC: Missing Transmission Position Input
When monitored: Continuously with key on.
Set condition: This Diagnostic Trouble Code (DTC) is set whenever Transfer Case Control Module (TCCM) stops receiving this message for 5 seconds.
If a DTC is Recoverable it may pass and extinguish the 4WD SERVICE Indicator Light in the same ignition cycle in which it has failed earlier. Otherwise, the 4WD SERVICE Indicator Light will remain illuminated until the ignition is cycled.