Pinpoint Test

1. Using a scan tool, carry out the Network Test.

Does the TPM module pass the Network Test? 

1. Yes: GO to 2  .
2. No: REFER to DIAGNOSTIC ROUTINE X : The Tire Pressure Monitor (TPM) Module Does Not Respond To The Scan Tool.

NOTE: Make sure that all aftermarket electronic equipment has been disconnected (if possible) and that the customer has been questioned about the kinds of electronic equipment they may have been using in the vehicle when this issue was identified.
1. Using a scan tool, carry out the TPM module self-test.

Is DTC U0140:87 present in the TPM module? 

1. Yes: REFER to Diagnostic Routine E : U0140:87.
2. No: GO to 3  .

1. Ignition ON.
2. Using a scan tool, view the BCM PIDs  .
3. Monitor the BCM TPMS_STAT PID.

Does the BCM TPMS_STAT PID display SYSTEM FAULT? 

1. Yes: GO to 4  .
2. No: GO to  5  .

1. Train all 4 TPMS sensors. REFER to Tire Pressure Monitoring System (TPMS) Sensor Training - Intelligent Access (IA)  or REFER to Tire Pressure Monitoring System (TPMS) Sensor Training - Integrated Keyhead Transmitter (IKT) .

Did all of the TPMS sensors transmit correctly and did the horn sound when each sensor is trained? 

1. Yes: The system is operating correctly at this time. The concern may have been caused by RFI. REFER to Radio Frequency Interference  and REFER to Tire Pressure Monitoring System (TPMS) PID Definitions  for information on locating sources of RFI.
2. No: GO to 5  .

1. Move the vehicle to rotate the wheels at least one-fourth of a turn. Leave the vehicle doors open.
2. Attempt to train known good TPMS sensors. REFER to Tire Pressure Monitoring System (TPMS) Sensor Training - Intelligent Access (IA)  or REFER to Tire Pressure Monitoring System (TPMS) Sensor Training - Integrated Keyhead Transmitter (IKT) .

Did the known good TPMS sensors transmit correctly and did the horn sound when the known good TPMS sensors were trained? 

1. Yes: If some of the sensors trained, INSTALL a new TPMS sensor for each sensor that failed to train. REFER to Tire Pressure Monitoring System (TPMS) Sensor .

   If all the known good sensors trained, INSTALL new sensors. REFER to Tire Pressure Monitoring System (TPMS) Sensor .

2. No: INSTALL a new TPM module. REFER to Tire Pressure Monitor (TPM) Module .

   TEST the system for normal operation. If the concern is still present, GO to 6  .

1. Ignition OFF.
2. Disconnect and inspect all BCM connectors.
3. Repair:

• corrosion (install new connector or terminals - clean module pins).
• damaged or bent pins - install new terminals/pins.
• pushed-out pins - install new pins as necessary.

1. Reconnect the BCM connectors. Make sure they seat and latch correctly.
2. Operate the system and determine if the concern is still present.

Is the concern still present? 

1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs  address this concern, INSTALL a new BCM. REFER to BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS (IA) , or REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS (IA) .
2. No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the DTCs  .