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.
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HOMESERVICE MANUALSCHRYSLER2013TOWN & COUNTRY V6-3.6LREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONU CODE CHARTSU0121WIRELESS IGNITION NODE (WIN)
2013 Chrysler Town & Country V6-3.6L
Wireless Ignition Node (WIN)
2013 Chrysler Town & Country V6-3.6LSECTION Wireless Ignition Node (WIN)
U0121-LOST COMMUNICATION WITH ABS
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
Ignition run time is greater than one second.
Battery voltage between 9 and 16 volts.
Engine run time greater than three seconds.
- Set Condition:
Bus messages not received from the Anti Lock Brake Module (ABS) for approximately two to five seconds.
Diagnostic Test
ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool, select view DTCs.
Is the DTC Active at this time?
Yes
- Totally Integrated Power Module (TIPM) and perform the U0121-Lost Communication with Anti-Lock Brake Module diagnostic procedure.
No
- Manufacturer Code Charts and perform the Stored Lost Communication DTCs diagnostic procedure.
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.