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Home >> Lincoln >> 2012 >> Navigator 2WD V8-5.4L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test AV: DTC B1318 (Satellite Digital Audio Receiver System (SDARS) Module (without navigation))
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Pinpoint Test AV: DTC B1318 (Satellite Digital Audio Receiver System (SDARS) Module (without navigation))




Information and Entertainment System

Pinpoint Test AV: DTC B1318 (Satellite Digital Audio Receiver System (SDARS) Module (Navigators without navigation))

Normal Operation

- DTC B1318 (Battery Voltage Low)- set by the Satellite Digital Audio Receiver System (SDARS) module when the supply voltage falls below 10 volts for at least 10 seconds during normal operation.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- High circuit resistance

- SDARS (Satellite Digital Audio Receiver System) module

PINPOINT TEST AV : DTC B1318 (SDARS (Satellite Digital Audio Receiver System) MODULE (Navigators without navigation))

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.

AV1 RECHECK THE SDARS (Satellite Digital Audio Receiver System) MODULE DTCs

- Ignition ON.

- Clear the SDARS (Satellite Digital Audio Receiver System) module DTCs.

- Wait at least 15 seconds.

- Repeat the SDARS (Satellite Digital Audio Receiver System) module self-test.

Is DTC B1318 still present?

Yes
GO to AV2.

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

AV2 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 AV3.

AV3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

- Check the battery condition and verify that the battery is fully charged.

Is the battery OK and fully charged?

Yes
GO to AV4.

No
REFER to Battery.

AV4 CHECK THE SDARS (Satellite Digital Audio Receiver System) MODULE VOLTAGE SUPPLY

- Ignition OFF.

- Measure and record the voltage at the battery.

- Disconnect: SDARS (Satellite Digital Audio Receiver System) Module C3290.

- Ignition ON.

- Measure the voltage between the SDARS (Satellite Digital Audio Receiver System) module C3290-9, circuit SBP03 (BU/RD), harness side and ground.





Is the voltage at the SDARS (Satellite Digital Audio Receiver System) module within 0.2 volt of the recorded battery voltage?

Yes
GO to AV5.

No
REPAIR the circuit for high resistance. CLEAR the DTCs. REPEAT the self-test.

AV5 CHECK THE SDARS (Satellite Digital Audio Receiver System) MODULE GROUND CIRCUIT FOR CONTINUITY

- Ignition OFF.

- Disconnect: Negative Battery Cable.

- Measure the resistance between the SDARS (Satellite Digital Audio Receiver System) module C3290-3, circuit GD114 (BK/BU), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to AV6.

No
REPAIR the circuit for high resistance. CLEAR the DTCs. REPEAT the self-test.

AV6 CHECK FOR CORRECT SDARS (Satellite Digital Audio Receiver System) MODULE OPERATION

- Ignition OFF.

- Connect: Negative Battery Cable.

- Disconnect the SDARS (Satellite Digital Audio Receiver System) module connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the SDARS (Satellite Digital Audio Receiver System) module 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 SDARS (Satellite Digital Audio Receiver System) module. REFER to Satellite Digital Audio Receiver System (SDARS) Module . 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. CLEAR the DTCs.

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