Pinpoint Test AH: DTC B1318 Or DTC U3003:16 (Front Controls Interface Module (FCIM))
Information and Entertainment System
Pinpoint Tests
Pinpoint Test AH: DTC B1318 Or DTC U3003:16 (Front Controls Interface Module (FCIM))
Normal Operation
- DTC B1318 (Battery Voltage Low) - set by the Front Controls Interface Module (FCIM) (without navigation) when the supply voltage on circuit SBP16 (VT/RD) falls below 10 volts for at least 10 seconds during normal operation.
- DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the FCIM (with navigation) when the supply voltage on circuit SBP16 (VT/RD) falls below 10 volts for at least 10 seconds during normal operation, or for greater than 250 milliseconds during the self-test.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- High circuit resistance
- FCIM
PINPOINT TEST AH: DTC B1318 OR DTC U3003:16 (FCIM)
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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AH1 RECHECK THE FCIM DTCs
- Ignition ON.
- Clear the FCIM DTCs.
- Wait at least 15 seconds.
- Repeat the FCIM self-test.
- Is DTC B1318 or U3003:16 still present?
Yes
GO to AH2.
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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AH2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
- Retrieve the continuous DTCs from all modules.
- Is DTC P0620, P0622, P0625, or P065B set in the PCM?
Yes
REFER to Charging System.
No
GO to AH3.
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AH3 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 AH4.
No
REFER to Battery.
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AH4 CHECK THE FCIM VOLTAGE SUPPLY
- Ignition OFF.
- Measure and record the voltage at the battery.
- Disconnect: FCIM C2402.
- Ignition ON.
- Measure the voltage between the FCIM C2402-1, circuit SBP16 (VT/RD), harness side and ground.
- Is the voltage at the FCIM within 0.2 volt of the recorded battery voltage?
Yes
GO to AH5.
No
REPAIR the circuit for high resistance. CLEAR the DTCs. REPEAT the self-test.
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AH5 CHECK THE FCIM GROUND CIRCUIT
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the FCIM C2402-4, circuit GD114 (BK/BU), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to AH6.
No
REPAIR the circuit for high resistance. CLEAR the DTCs. REPEAT the self-test.
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AH6 CHECK FOR CORRECT FCIM OPERATION
- Ignition OFF.
- Connect: Negative Battery Cable.
- Disconnect the FCIM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the FCIM connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes
INSTALL a new FCIM. REFER to Front Controls Interface Module (FCIM) Front Controls Interface Module (FCIM). 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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