Pinpoint Test X: DTC B1317 or DTC U3003:17 (Accessory Protocol Interface Module (APIM))

Information and Entertainment System

Pinpoint Tests

Pinpoint Test X: DTC B1317 Or DTC U3003:17 (Accessory Protocol Interface Module (APIM))

Refer to Wiring Diagrams Set 130, Audio System for schematic and connector information. Diagrams By Number

Normal Operation
- DTC B1317 (Battery Voltage High) - set by the Accessory Protocol Interface Module (APIM) (V1) as a continuous or on-demand DTC if the APIM detects high battery voltage above 16 volts for greater than 10 seconds on circuit SBP13 (GY/RD).
- DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the APIM (V2) as a continuous or on-demand DTC if the APIM detects high battery voltage above 15.8 volts for greater than 10 seconds on circuit SBP13 (GY/RD).

This pinpoint test is intended to diagnose the following:

- Charging system concern
- APIM



PINPOINT TEST X: DTC B1317 OR DTC U3003:17 (APIM)

NOTE: DTC B1317 or DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.

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X1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES


- Ignition ON.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC B1317, B1676, P0563 (PCM), or U3003:17 set in more than one module?

Yes
REFER to Battery to diagnose an overcharging.

No
GO to X2.

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X2 CHECK THE BATTERY VOLTAGE


- Turn off all interior/exterior lights and accessories.
- Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.
- Does the battery voltage rise to 15.5 volts or higher?

Yes
REFER to Charging System.

No
GO to X3.

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X3 RECHECK FOR DTC B1317 OR DTC U3003:17


- Ignition OFF.
- Ignition ON.
- Clear the APIM DTCs.
- Repeat the APIM self-test.
- Is DTC B1317 or DTC U3003:17 present?

Yes
INSTALL a new APIM. REFER to Accessory Protocol Interface Module (APIM) Accessory Protocol Interface Module (APIM). TEST the system for normal operation.

No
The system is operating correctly at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

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