Pinpoint Tests BX: DTC U3003:16
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test BX: DTC U3003:16
Refer to Wiring Diagram Set 60 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Instrument Cluster for schematic and connector information. Diagrams By Number
Normal Operation
- DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - sets in the Instrument Panel Cluster (IPC) in continuous memory if the IPC detects battery voltage below 9 volts on the voltage input circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- High circuit resistance
- IPC
PINPOINT TEST BX: DTC 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 will result in false resistance readings. Refer to Battery.
-------------------------------------------------
BX1 RECHECK THE IPC DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC Self-Test .
- Clear the DTCs. Repeat the IPC self-test.
- Is DTC U3003:16 still present?
Yes
GO to BX2.
No
The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.
-------------------------------------------------
BX2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
- Enter the following diagnostic mode on the scan tool: PCM Self-Test .
- Carry out the PCM Key ON Engine OFF (KOEO) self-test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC P0620, P0622, P0625, P0626 or P065B set in the PCM?
Yes
REFER to Charging System.
No
GO to BX3.
-------------------------------------------------
BX3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Check the battery condition and verify that the battery is fully charged. Refer to Battery.
- Is the battery OK and fully charged?
Yes
GO to BX4.
No
REFER to Battery.
-------------------------------------------------
BX4 CHECK THE IPC VOLTAGE INPUT
- Measure and record the voltage at the battery.
- Enter the following diagnostic mode on the scan tool: IPC DataLogger .
- Select the IPC voltage input PID (MODULE_VOLT). Monitor the voltage PID and compare the reading with the recorded battery voltage.
- Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to BX7.
No
GO to BX5.
-------------------------------------------------
BX5 CHECK THE IPC VOLTAGE SUPPLY
- Ignition OFF.
- Disconnect: IPC C220 .
- Ignition ON.
- For non-Hybrid, measure the voltage between the IPC C220-21, circuit SBP26 (YE/RD), harness side and ground.
- For Hybrid, measure the voltage between the IPC C220-19, circuit SBP26 (YE/RD), harness side and ground.
- Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to BX6.
No
REPAIR circuit SBP26 (YE/RD) for high resistance. CLEAR the DTC. REPEAT the self-test.
-------------------------------------------------
BX6 CHECK THE IPC GROUND CIRCUIT
- Ignition OFF.
- Disconnect: Negative Battery Cable .
- On non-Hybrid, measure the resistance between the IPC C220-5, circuit GD116 (BK/VT), harness side and ground.
- On Hybrid, measure the resistance between the IPC C220-9, circuit GD116 (BK/VT), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to BX7.
No
REPAIR circuit GD116 (BK/VT) for high resistance. CLEAR the DTCs. REPEAT the self-test.
-------------------------------------------------
BX7 CHECK FOR CORRECT IPC OPERATION
- Disconnect the IPC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IPC connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Instrument Panel Cluster (IPC). TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
-------------------------------------------------