Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test H: DTC U0140
2010 Volkswagen Routan SSECTION Pinpoint Test H: DTC U0140
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- H1 VERIFY CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
- Is an observable symptom present?
- Yes: GO to H2.
- 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.
- H2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the SJB pass the network test?
- Yes: GO to H3.
- No: REFER to INSPECTION AND VERIFICATION .
- H3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST
- Check for recorded DSM DTCs from the self-test.
- Is DTC B1317 or DTC B1318 recorded?
- Yes:
For DTC B1317, Go To PINPOINT TEST F .
For DTC B1318, Go To PINPOINT TEST G .
- No: GO to H4.
- H4 RECHECK THE DSM DTCs NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out.
- Clear the DTCs. Repeat the DSM self-test.
- Is DTC U0140 still present?
- Yes: GO to H5.
- 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.
- H5 CHECK FOR DTC U0140/U0140:00 SET IN OTHER MODULES
- Clear all DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0140/U0140:00 set in other modules?
- Yes: INSTALL a new SJB . REFER to Installation .
- No: INSTALL a new DSM . REFER to Removal and Installation .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.