Pinpoint Test L: U3003:16

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105-R025D)

Refer to CRUISE CONTROL for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Cruise Control - Vehicles With: Adaptive Cruise Control With Lane Centering - System Operation and Component Description .

REFER to: Cruise Control - Vehicles With: Active Drive Assist/Intelligent Adaptive Cruise Control - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
CCM 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 9.0 volts for more than 100 ms.

Possible Sources

Wiring, terminals and connectors
Battery
Generator
CCM
PCM

NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to BATTERY DISCONNECT AND CONNECT .

L1 CHECK THE CCM (CRUISE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs). Repeat the CCM module self-test.
Is DTC U3003:16 still present?

Yes GO to L2

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

L2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, perform the PCMKOEO self-test.
Are any charging system DTCs present in the PCM?

Yes REFER to the appropriate DTC Chart.

No GO to L3

L3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Check the battery condition and verify the battery is fully charged. REFER to: Battery .
Is the battery OK and fully charged?

Yes GO to L4

No INSTALL a new battery. REFER to: Battery .

L4 CHECK THE CCM (CRUISE CONTROL MODULE) VOLTAGE SUPPLY

Ignition OFF.

Disconnect CCM C1897.

Ignition ON.

Measure and record battery voltage at the battery.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1897-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage within 0.2 volt of the recorded battery voltage?

Yes

GO to L5

No	REPAIR the circuit.

L5 CHECK THE CCM (CRUISE CONTROL MODULE) GROUND CIRCUIT

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1897-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to L6

No	REPAIR the circuit.

L6 CHECK FOR CORRECT CCM (CRUISE CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all CCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the CCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new CCM. REFER to: Cruise Control Module (CCM) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.