# Service bulletin Q274NAS1

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10204880
- Published by NHTSA: 2021\-12\-13
- Manufacturer's number: Q274NAS1
- Manufacturer's date: 2013\-10\-09
- NHTSA component: ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS; STRUCTURE:BODY:TAILGATE

## NHTSA's summary

Technical Bulletin: Service Action: Power Tailgate

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10204880-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10204880-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame, Electrical system, Wiring and fuses

## Vehicles listed

- 2013 LAND ROVER RANGE ROVER

## Other bulletins for the same vehicles and component

- [Q247NAS1](/bulletins/10204871.md), 2021-12-13, Service bulletin: STRUCTURE:BODY:TAILGATE; ELECTRICAL SYSTEM:WIRING: REAR COMPARTMENT/TRUNK. Service Action: Power Tailgate
- [LTB00584NAS1](/bulletins/10204749.md), 2021-12-13, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STEERING; ELECTRICAL SYSTEM:WIRING:POSITION/LIMIT SENSOR/SWITCH. Technical Bulletin: Intermittent Steering Wheel Audio Control Switch Operation onwards
- [LTB00574NAS1](/bulletins/10204741.md), 2021-12-13, Service bulletin: ELECTRICAL SYSTEM:WIRING; SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). Technical Bulletin: Air Suspension System Termistor/Wiring Sleeve
- [SSM73845](/bulletins/10142559.md), 2018-07-02, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING. In the event that a SRS firing circuit is found to be damaged, please refer to SCN JLRP00128 and TOPIx \(workshop manual section 418\-02 \- Description and Operation ? Diagnosis and Testing\) for the updated wiring repair standard and guidelines.
- [SSM71278](/bulletins/10106315.md), 2017-06-14, Service bulletin: STEERING:ELECTRIC POWER ASSIST SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:WIRING. ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY FOLLOWING AN ECO STOP START EVENT, POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK.
- [SSM71278](/bulletins/10106162.md), 2017-06-13, Service bulletin: ELECTRICAL SYSTEM:WIRING; STEERING:ELECTRIC POWER ASSIST SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. VEHICLE STEERING FEELS HEAVIER THAN EXPECTED ACCOMPANIED BY VISUAL OR AUDIIBLE WARNINGS
- [SSM71278](/bulletins/10106104.md), 2017-06-13, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:WIRING. "ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: \-B1304\-16: ELECTRONIC POWER ASSISTED STEERING \(EPAS\) SYSTEM CIRCUIT VOLTAGE BELOW THRESHOLD \-U3001\-00: POWER STEERING CONTROL MODULE \(PSCM\) SYSTEM IMPROPER SHUTDOWN. THESE MAY BE ACCOMPANIED BY: \-U0001\-87 / 88 HIGH SPEED CAN BUS INVALID SERIAL DATA RECEIVED / MISSING MESSAGE. CHCM DTCS LOGGED: \-U0131\-00 CHASSIS CONTROL MODULE \(CHCM\) LOST COMMS WITH PSCM. \-U3003\-62 BATTERY VOLTAGE SIGNAL COMPARE FAILURE. \-U0420\-68 CHCM INVALID DATA RECEIVED FROM PSCM. CAUSE: THIS MAY BE CAUSED BY: \-LOW BATTERY VOLTAGE. \-WIRING HARNESS ISSUE \(SHORT / OPEN CIRCUIT, HIGH RESISTANCE\). \-HIGH RESISTANCE AT EPAS EARTH TERMINAL \(FOR L405/L494\) G1D132 AND OR G4D178, \(SEE ATTACHED DIAGRAM\). OR IF ON L550/L538 HIGH RESISTANCE AT G1D122A, G1D122B, G1D122AZ AND G1D108. \-POOR CONNECTION OR PIN SET CONDITION AT CONNECTOR NUMBER: C11\-G1"
- [SSM71278](/bulletins/10106046.md), 2017-06-12, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; STEERING:ELECTRIC POWER ASSIST SYSTEM; ELECTRICAL SYSTEM:WIRING; EQUIPMENT:ELECTRICAL. "ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: \-B1304\-16: ELECTRONIC POWER ASSISTED STEERING \(EPAS\) SYSTEM CIRCUIT VOLTAGE BELOW THRESHOLD \-U3001\-00: POWER STEERING CONTROL MODULE \(PSCM\) SYSTEM IMPROPER SHUTDOWN. THESE MAY BE ACCOMPANIED BY: \-U0001\-87 / 88 HIGH SPEED CAN BUS INVALID SERIAL DATA RECEIVED / MISSING MESSAGE. CHCM DTCS LOGGED: \-U0131\-00 CHASSIS CONTROL MODULE \(CHCM\) LOST COMMS WITH PSCM. \-U3003\-62 BATTERY VOLTAGE SIGNAL COMPARE FAILURE. \-U0420\-68 CHCM INVALID DATA RECEIVED FROM PSCM. CAUSE: THIS MAY BE CAUSED BY: \-LOW BATTERY VOLTAGE. \-WIRING HARNESS ISSUE \(SHORT / OPEN CIRCUIT, HIGH RESISTANCE\). \-HIGH RESISTANCE AT EPAS EARTH TERMINAL \(FOR L405/L494\) G1D132 AND OR G4D178, \(SEE ATTACHED DIAGRAM\). OR IF ON L550/L538 HIGH RESISTANCE AT G1D122A, G1D122B, G1D122AZ AND G1D108."
- [LTB00626NAS2](/bulletins/10104921.md), 2017-06-07, Service bulletin: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD. "SITUATION: ONE OR MORE OF THE FOLLOWING ISSUES MAY BE EVIDENT: • THE ALARM IS TRIGGERED FOR NO APPARENT REASON; • THE 'HOOD OPEN' MESSAGE IS DISPLAYED ON THE INSTRUMENT CLUSTER; AND/OR • A MISLOCK SOUND IS EMITTED WHEN LOCKING THE VEHICLE. CAUSE: THESE ISSUES MAY BE CAUSED BY A FAULTY HOOD OPEN SWITCH."
- [LTB00660NAS2](/bulletins/10102185.md), 2017-06-01, Service bulletin: ELECTRICAL SYSTEM:WIRING; PARKING BRAKE. "SITUATION: THE FRONT AND/OR REAR PARKING AID SYSTEM MAY BE INOPERATIVE. CAUSE: THIS MAY BE CAUSED BY A CORRODED WIRING HARNESS AT THE FRONT AND/OR REAR BUMPER HARNESSES."

JSON: [/v1/bulletins/10204880](/v1/bulletins/10204880)

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