Pinpoint Test AE: DTC U3003:16 (Front Control/Display Interface Module (FCDIM))
Information and Entertainment System
Pinpoint Test AE: DTC U3003:16 (Front Control/Display Interface Module (FCDIM))
Refer to Wiring Diagram Set 130, Audio System for schematic and connector information. Diagrams By Number
Normal Operation
- DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the Front Control/Display Interface Module (FCDIM) when the supply voltage falls below 9 volts for greater than 1 second during normal operation.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- High circuit resistance
- FDIM
PINPOINT TEST AE: DTC U3003:16 (FCDIM)
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, Mounting and Cables Battery Disconnect.
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AE1 RECHECK THE FCDIM DTCs
- Clear the FCDIM DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Repeat the FCDIM self-test.
- Is DTC U3003:16 still present?
Yes
GO to AE2.
No
The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.
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AE2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
- Retrieve the continuous memory DTCs from all modules.
- Are any low voltage DTCs set in the PCM?
Yes
REFER to Charging System Testing and Inspection.
No
GO to AE3.
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AE3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Check the battery condition and verify that the battery is fully charged. Refer to Battery, Mounting and Cables Testing and Inspection.
- Is the battery OK and fully charged?
Yes
GO to AE4.
No
REFER to Battery, Mounting and Cables Testing and Inspection.
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AE4 CHECK THE TCIL VOLTAGE SUPPLY
- Ignition OFF.
- Measure and record the voltage at the battery.
- Disconnect: FCDIM C2123.
- Ignition ON.
- Measure the voltage between the FCDIM C2123-1, circuit SBP07 (WH/RD), harness side and ground.
- Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to AE5.
No
REPAIR the circuit for high resistance. CLEAR the DTC. REPEAT the self-test.
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AE5 CHECK THE FCDIM GROUND CIRCUIT FOR CONTINUITY
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the FCDIM C2123-7, circuit GD115 (BK/GY), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to AE6.
No
REPAIR the circuit for high resistance. CLEAR the DTCs. REPEAT the self-test.
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AE6 CHECK FOR CORRECT FCDIM OPERATION
- Connect: Negative Battery Cable.
- Disconnect the FCDIM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the FCDIM 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 FCDIM. REFER to Front Controls/Display Interface Module (FCDIM) Front Controls/Display Interface Module (FCDIM). 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.
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