DTC | Description | Fault Trigger Conditions |
|---|---|---|
U3003:16 Battery Voltage: Circuit Voltage Below Threshold | Set by the CCM as a continuous memory and on-demand DTC if the CCM detects low battery voltage below 9.5 volts for more than 500 ms. |
Possible Sources
Wiring, terminals and connectors Battery Generator CCM PCM
PINPOINT TEST Q : U3003:16
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to Section 414-01.
Q1 RECHECK THE CCM (CRUISE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Ignition ON. Using a diagnostic scan tool, perform the self-test.
Is DTC U3003:16 still present?
Yes | GO to Q2 |
|---|---|
No | The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition. |
Q2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)
Using a diagnostic scan tool, perform the PCM self-test.
Are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM?
Yes | For 2.3L, REFER to: Charging System - 2.3L EcoBoost (201kW/273PS) (414-00 Charging System - General Information, Diagnosis and Testing). For 3.7L, REFER to: Charging System - 3.7L Duratec (227kW/301PS) (414-00 Charging System - General Information, Diagnosis and Testing). For 5.0L, REFER to: Charging System - 5.0L 32V Ti-VCT (414-00 Charging System - General Information, Diagnosis and Testing). |
|---|---|
No | GO to Q3 |
Q3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
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