Pinpoint Test I : U0140:00

I1 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Does the BCM pass the network test?

Yes	GO to I2.
No	Refer to article 'Module Communications Network', Go to Pinpoint Test I .

I2 CHECK THE ABS MODULE CMDTCs

Using a diagnostic scan tool, carry out the ABS module self-test.

Clear the DTCs.

Ignition OFF.

Ignition ON.

Repeat the ABS module self-test.

Record the ABS module DTCs.

Is DTC U0140:00 retrieved again?

Yes	GO to I3.
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.

I3 REVIEW THE RECORDED DTCs FROM THE ABS MODULE SELF-TEST

Check the recorded DTCs from the ABS module self-test.

Is DTC U3003:16 or U3003:17 present?

Yes	For DTC U3003:16, GO to Pinpoint Test A . For DTC U3003:17, GO to Pinpoint Test P .
No	GO to I4.

I4 CHECK FOR DTCs IN THE BCM

Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC U3003:16 or U3003:17 present?

Yes	For DTC U3003:16, Refer to article 'Multifunction Electronic Modules', Go to Pinpoint Test H . For DTC U3003:17, Refer to article 'Multifunction Electronic Modules', Go to Pinpoint Test I .
No	GO to I5.

I5 CHECK FOR DTC U0140:00 SET IN OTHER MODULES

Using a diagnostic scan tool, carry out the self-test for all modules.

Retrieve and record the CMDTCs from all modules.

Is DTC U0140:00 set in any other module?

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 Multifunction Electronic Modules - Without Intelligent Access or REFER to Multifunction Electronic Modules - With Intelligent Access .

CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSBs address this concern and the vehicle is not equipped with adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . If no TSBs address this concern and the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU. REFER to Hydraulic Control Unit (HCU) .