U3003:16 and U3003:17: Notes

Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.

NOTE: Diagnostic Trouble Codes (DTCs) U3003:16 and 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. If the RCM detects input voltage below 9.0 volts while a fault is present, or below 6.0 volts, whether or not a fault is present, it stores DTC U3003:16 in memory. If the RCM detects input voltage above 16 volts while a fault is present, or above 18 volts, regardless of fault status, it stores DTC 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. If the OCSM detects input voltage below 8 volts, it stores DTC U3003:16 in memory. If the OCSM detects input voltage above 18 volts, it stores DTC 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 volts with a SRS fault or below 6 volts, whether or not a SRS fault exists.
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 18 volts without a SRS fault.
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	This DTC sets if the OCSM detects voltage below 8 volts.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	This DTC sets if the OCSM detects voltage above 18 volts.

Possible Sources

Wiring, terminals or connectors
OCSM
RCM

Visual Inspection and Diagnostic Pre-checks

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