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Transfer Case Control Module (TCCM)

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 > 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 > indicator circuit.

Name of DTC: 4WD > 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 > 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 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 detects an EE Checksum Error or a Flash Checksum. DTC.

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 four bad transitions during one ignition cycle.

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 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 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.