PINPOINT TEST Y : U3003:16 and U3003:17: Notes

Diagnostic Overview

U3003:16 and U3003:17

Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.

NOTE: DTCs U3003:16 and/or U3003:17 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.

Normal Operation - RCM

The RCM continuously monitors the input voltage for correct operation. When the RCM detects input voltage outside of an expected range, it stores DTC U3003:16 or U3003:17 in memory. If the RCM sets DTC U3003:16 or U3003:17, it sends a message to the IPC to illuminate the airbag warning indicator.

Normal Operation - OCSM

The OCSM continuously monitors the input voltage for correct operation. When the RCM detects input voltage outside of an expected range, it stores DTC U3003:16 or U3003:17 in memory. If the OCSM sets DTC U3003:16 or U3003:17, it sends a fault message to the RCM. The RCM then sends a message to the IPC to illuminate the airbag warning indicator.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	This DTC sets if the RCM detects voltage below 9.5 volts with a SRS fault or below 8.0 volts without a SRS fault.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	This DTC sets if the RCM detects voltage above 16 volts with a SRS fault or above 20 volts without a SRS fault.
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	This DTC sets if the OCSM detects voltage below 8 volts with a SRS fault.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	This DTC sets if the OCSM detects voltage above 18 volts.

Visual Inspection and Diagnostic Pre-checks

Inspect for damaged wiring harness(es)
Inspect for loose or damaged connectors