Inspection And Verification
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.
- 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.
- Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION
MECHANICAL ELECTRICAL - Oil filler cap
- Engine part load breather hose
- Engine part load breather - Camshaft cover bank 1
- Engine full load breather hose
- Engine full load breather - Camshaft cover bank 2
- Check valve
- Positive crankcase ventilation valve (quantity 2)
- Engine vent oil separator
- Fuse(s)
- Wiring harness
- Loose or corroded electrical connector(s)
- Intake manifold tuning (IMT) valve
- Powertrain control module (PCM)
- 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) (DTC)s and refer to the DTC INDEX .