Pinpoint Test K: DTC U0101

K1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to K2.
- No : The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
K2 CHECK THE COMMUNICATION NETWORK
- Connect the scan tool.
- Ignition ON.
- Using a scan tool, carry out the Network Test.
- Does the TCM pass the Network Test?
- Yes : GO to K3.
- No : REFER to MODULE COMMUNICATIONS NETWORK .
K3 RECHECK THE ABS MODULE DTCs
- Using a scan tool, clear the ABS module DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
- Is DTC U0101 still present?
- Yes : GO to K4.
- No : The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
K4 CHECK FOR DTC U0101 SET IN OTHER MODULES
- Using the scan tool, clear all CMDTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test - All CMDTCs.
- Is DTC U0101 set in more than one module?
- Yes : INSTALL a new TCM. REFER to Transmission Service Components - Exploded View, External Components in AUTOMATIC TRANSAXLE/TRANSMISSION - 6R80 .
- No : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE in this information. TEST the system for normal operation.