Inspection And Verification

WARNING: This page is about a different variant/trim than selected.

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.

NOTE:

If a control module or a component is at fault and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures information, or determine if any prior approval program is in operation, prior to the installation of a new module/component.
When performing voltage or resistance tests, always use a digital multimeter that has the resolution ability to view 3 decimal places. For example, on the 2 volts range can measure 1 mV or 2 K Ohm range can measure 1 Ohm. When testing resistance always take the resistance of the digital multimeter leads into account.
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

Verify the customer concern

Visually inspect for obvious signs of damage and system integrity

VISUAL INSPECTION

MECHANICAL	ELECTRICAL
Leaks Metal fatigue Correct installation Selective catalyst reduction silencer Silencer(s) Joints Mountings Clearance around components Diesel exhaust fluid injector Diesel exhaust fluid line Diesel exhaust fluid tank Diesel exhaust fluid filler assembly Diesel exhaust fluid level Diesel exhaust fluid quality	Battery Engine junction box Rear junction box Fuses Wiring harnesses and connectors Powertrain control module Sensor(s) Actuator(s) Diesel Exhaust Fluid (DEF) relay

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Code(s) and refer to the DTC Index
Check JLR claims submission system for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and complete the recommendations as required.