Gateway Module (GWM)

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00

NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component.

NOTE: Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system)

NOTE: When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account

NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests

NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion

NOTE: If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals

NOTE: Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the manufacturers approved diagnostic system

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the gateway module, for additional diagnosis and testing information refer to the relevant diagnosis and testing section. For additional information, refer to COMMUNICATIONS NETWORK .

DTC	Description	Possible Causes	Action
B1087-8F	LIN Bus 'A' - erratic	Gateway module/dual battery module wiring harness fault Module communications fault - local interconnect network gateway module and dual battery module corrupted Dual battery module fault Gateway module fault	Refer to the electrical circuit diagrams and check local interconnect network between gateway module and dual battery module. Repair wiring harness as required. Clear DTC and retest Re-configure the gateway module using the manufacturer approved diagnostic system. Clear DTCs and retest If fault persists, check and install a new dual battery module If fault persists, check and install a new gateway module Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B13C3-92	Dual Battery Module - Dual Battery Fuse Box - performance or incorrect operation	Gateway module wiring harness fault - Circuit MESS_NEG - Check connections are secure and wiring integrity Dual battery fuse box module wiring harness fault - Circuit FET_DIAGNOSTICS - Check connections are secure and wiring integrity Dual battery fuse box component internal failure Gateway module failure	Refer to the electrical circuit diagrams and check the connection between the gateway module and the dual battery fuse box - Circuit MESS_NEG - Check connections are secure and wiring integrity Refer to the electrical circuit diagrams and check check the connection between the dual battery fuse box and the gateway module - Circuit FET_DIAGNOSTICS - Check connections are secure and wiring integrity If no wiring/connector faults are found, check and install a new dual battery fuse box. Run dual battery system diagnostic service routine. Clear DTC and retest If fault persists, check and install a new gateway module. Clear DTC and run dual battery system diagnostic service routine, then retest Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B13C3-96	Dual Battery Module - Dual Battery Fuse Box - component internal failure	Dual battery fuse box component internal failure	Clear DTC and retest. If fault persists, check and install a new dual battery fuse box and run dual battery system diagnostic service routine
B13C4-96	Dual Battery Module - component internal failure	Dual battery module component internal failure	Clear DTC and retest. If fault persists, check and install a new dual battery module and run dual battery system diagnostic service routine
B13C5-92	Secondary Battery - performance or incorrect operation	Secondary battery wiring issue Secondary battery degraded Dual battery module failure	Refer to the electrical circuit diagrams and check connections are secure and wiring integrity of gateway module circuit - Circuit MESS_POS Refer to the electrical circuit diagrams and check connections are secure and wiring integrity of dual battery fuse box circuits - Circuit GATEWAY, Circuit BATT_2 Refer to the electrical circuit diagrams and check power and ground connections of second battery If no wiring/connector faults are found, check condition of second battery and replace as required. Run secondary battery diagnostic service routine. Clear DTC and retest. If fault persists, check and install a new dual battery module. Clear DTC and retest.
B1402-96	Dual Battery Fuse Box - Contactor 1 - component internal failure	Dual battery module wiring harness fault - Circuit CONTACTOR_1_CTRL, Circuit GND - Check connections are secure and wiring integrity Dual battery fuse box module wiring harness fault - Circuit FET_DIAGNOSTICS, Circuit GND - Check connections are secure and wiring integrity Dual battery module failure Dual battery fuse box failure Gateway module failure	Refer to the electrical circuit diagrams and check the contactor 1 control circuit between the dual battery module and the dual battery fuse box - Circuit CONTACTOR_1_CTRL, Circuit GND - Check connections are secure and wiring integrity Refer to the electrical circuit diagrams and check the dual battery fuse box circuits - Circuit FET_DIAGNOSTICS, Circuit GND - Check connections are secure and wiring integrity If no wiring/connector faults are found, check and install a new dual battery module. Run dual battery system diagnostic service routine. Clear DTC and retest If fault persists, check and install a new dual battery fuse box and run dual battery system diagnostic service routine If fault persists, check and install a new gateway module. Clear DTC and run dual battery system diagnostic service routine, then retest Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1403-96	Dual Battery Fuse Box - Contactor 2 - component internal failure	Dual battery module wiring harness fault - Circuit CONTACTOR_2_CTRL, Circuit GND - Short circuit to ground, short circuit to power, open circuit, high resistance Dual battery fuse box module wiring harness fault - Circuit BATT_2, Circuit GATEWAY, Circuit GND - Short circuit to ground, short circuit to power, open circuit, high resistance Dual battery module failure Dual battery fuse box failure Gateway module failure	Refer to the electrical circuit diagrams and check the contactor 2 control circuit between the dual battery module and the dual battery fuse box - Circuit CONTACTOR_2_CTRL, Circuit GND - Check connections are secure and wiring integrity Refer to the electrical circuit diagrams and check the dual battery fuse box circuits - Circuit BATT_2, Circuit GATEWAY, Circuit GND - Check connections are secure and wiring integrity If no wiring/connector faults are found, check and install a new dual battery module. Run dual battery system diagnostic service routine. Clear DTC and retest If fault persists, check and install a new dual battery fuse box and run dual battery system diagnostic service routine If fault persists, check and install a new gateway module. Clear DTC and run dual battery system diagnostic service routine, then retest Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1404-64	Charging System - signal plausibility failure	Possible charging system fault	Refer to relevant information and battery care manual. Check battery state of charge and starting/charging system performance Refer to relevant information and run charging system on demand self-test routines as directed
U0001-88	High speed CAN communication Bus - bus off	High speed CAN failure - bus off	Refer to the electrical circuit diagrams and check the high speed CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U0010-88	Medium speed CAN communication Bus - bus off	Medium speed CAN failure - bus off	Refer to the electrical circuit diagrams and check the medium speed CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U3000-46	Control module - calibration/parameter memory failure	Gateway module internal fault - corrupt non-volatile memory	Re-configure the gateway module using the manufacturer approved diagnostic system. Clear DTCs and retest If fault persists, check and install a new gateway module Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
U1A14-00	CAN Initialisation Failure - no sub type information	Gateway module internal fault - CAN transceiver failure CAN fault	Clear DTC and retest. Refer to the electrical circuit diagrams and check the power and ground connections to the gateway module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test If fault persists, check and install a new gateway module as required Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module
U2100-00	Initial Configuration Not Complete - no sub type information	Incorrectly configured central junction box CAN fault Central junction box fault	Re-configure the central junction box using the manufacturer approved diagnostic system. Clear DTC and retest Refer to the electrical circuit diagrams and check the power and ground connections to the central junction box and the gateway module Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network between the central junction box and gateway module. Clear DTC and retest If fault persists, check and install a new central junction box as required Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module
U2101-00	Control Module Configuration Incompatible - no sub type information	Car configuration file mismatch Gateway module not correctly configured Gateway module fault	Using the manufacturer approved diagnostic system check and update the car configuration file as required. Clear DTC and retest Re-configure the gateway module using the manufacturer approved diagnostic system. Clear DTC and retest If fault persists, check and install a new gateway module as required Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module
U3000-04	Control Module - System Internal Failures	Gateway module internal failure	Clear DTC and retest. Check and install a new gateway module as required Run dual battery system diagnostic service routine to confirm fault is cleared Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module