Collision Warning and Collision Avoidance System — 2016 workshop reference 6142

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	U3003:16 Battery Voltage: Circuit Voltage Below Threshold	Set by the HUD module in continuous memory if the HUD module detects low battery voltage below 7 volts for more than 500 ms.

DTC

Description

Fault Trigger Conditions

U3003:16 Battery Voltage: Circuit

Voltage Below Threshold

Set by the HUD module in continuous memory if the HUD module detects low battery voltage below 7 volts for more than 500 ms.

Possible Sources

Wiring, terminals or connectors Battery Generator PCM HUD module

PINPOINT TEST G : U3003:16

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

G1 CHECK THE HUD (HEAD UP DISPLAY) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON. Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs). Repeat the HUD module self-test.

Is DTC U3003:16 still present?

Yes	GO to G2
No	The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

G2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)

Using a diagnostic scan tool, perform the PCM KOEO self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes	For 2.3L, REFER to: Electronic Engine Controls (303-14A Electronic Engine Controls - 2.3L EcoBoost (231kW/314PS), Diagnosis and Testing). For 3.7L, REFER to: Electronic Engine Controls (303-14B Electronic Engine Controls - 3.7L Duratec (227kW/301PS), Diagnosis and Testing). For 5.0L, REFER to: Electronic Engine Controls (303-14C Electronic Engine Controls - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Diagnosis and Testing).
No	GO to G3

Yes

For 2.3L, REFER to: Electronic Engine Controls (303-14A Electronic Engine Controls - 2.3L EcoBoost (231kW/314PS), Diagnosis and Testing). For 3.7L, REFER to: Electronic Engine Controls (303-14B Electronic Engine Controls -

3.7L Duratec (227kW/301PS), Diagnosis and Testing). For 5.0L, REFER to: Electronic Engine Controls (303-14C Electronic Engine Controls -

5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Diagnosis and Testing).

GO to G3

G3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

Check the battery condition and verify the battery is fully charged. REFER to: Battery (414-01 Battery, Mounting and Cables) .

Source reference 6142

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.