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:

GUIDED DIAGNOSTICS MUST BE FOLLOWED AND THE REPAIR ADVISED BY THE PROCESS COMPLETED. FAILURE TO DO SO MAY RESULT IN THE REJECTION OF ANY WARRANTY CLAIM MADE.
The electronic power steering gears do not use fluid to be lubricated and will not leak.
When diagnosing steering faults if issues are found to be due to interfacing system issues. For example, anti-lock brake system, park aid, suspension, battery/charging system, etc. Make sure warranty is claimed against the interfacing system (Causal Part) where the problem is not the steering gear.
If a control module or a component is out of specification and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual, or determine if any prior approval program is in operation, prior to the installation of a new module/component.
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 Jaguar Land Rover (JLR) approved diagnostic equipment).
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 1mV 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.
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
If Diagnostic Trouble Codes (DTC) 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.
Check the 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.

Verify the customer concern.
- If a road test is necessary make sure the vehicle is safe to do so
- Using guidance from the symptom chart, and the symptoms defined in the Jaguar land Rover approved diagnostic equipment

Visually inspect for obvious signs of mechanical or electrical damage

WARNING: The following issues are not covered under Warranty. Retailer/Authorized repairers should not claim these issues.

Accident damage
Bent Steering Gear
Bent Tie Rod
Damage Power Steering Control Module (PSCM) housing and Power Motor
Water damage
Internal Rusty gears
Water ingress

VISUAL INSPECTION DESCRIPTION

MECHANICAL
Check the tires for correct pressure, size, wear and tread pattern Check for wheel rim and tire damage Check road wheel security Check for vehicle or suspension damage Check steering ball joints and suspension components for abnormally high friction For any mechanical concerns, follow the symptoms detailed in the Symptom Chart and associated Pinpoint Test(s): Steering Wheel Misaligned/Vehicle Pull/Drift - GO to Pinpoint Test A .

MECHANICAL

Check the tires for correct pressure, size, wear and tread pattern
Check for wheel rim and tire damage
Check road wheel security
Check for vehicle or suspension damage
Check steering ball joints and suspension components for abnormally high friction
For any mechanical concerns, follow the symptoms detailed in the Symptom Chart and associated Pinpoint Test(s):
- Steering Wheel Misaligned/Vehicle Pull/Drift - GO to Pinpoint Test A .

ELECTRICAL
Fuses Wiring harnesses and connectors PSCM Steering Angle Sensor Module (SASM) Check the PSCM Power and Ground Circuit(s) - GO to Pinpoint Test B . Check the power steering torque sensor Power and Ground Circuit(s) - GO to Pinpoint Test C . Check the High Speed (HS) Controller Area Network (CAN) (Chassis) signal/circuit(s) to the PSCM - GO to Pinpoint Test D . Check the FlexRay signal/circuit(s) to the PSCM - GO to Pinpoint Test E . For any electrical concerns, follow the symptoms detailed in the Symptom Chart and associated Pinpoint Test(s):

ELECTRICAL

Fuses
Wiring harnesses and connectors
PSCM
Steering Angle Sensor Module (SASM)
Check the PSCM Power and Ground Circuit(s) - GO to Pinpoint Test B .
Check the power steering torque sensor Power and Ground Circuit(s) - GO to Pinpoint Test C .
Check the High Speed (HS) Controller Area Network (CAN) (Chassis) signal/circuit(s) to the PSCM - GO to Pinpoint Test D .
Check the FlexRay signal/circuit(s) to the PSCM - GO to Pinpoint Test E .
For any electrical concerns, follow the symptoms detailed in the Symptom Chart and associated Pinpoint Test(s):

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 with the customer and refer to the JLR approved diagnostic equipment. Alternatively check symptoms against symptom chart below and/or check DTC (s) as appropriate and refer to the following DTC indexes below:
- DTC Index - PSCM in this procedure.
- DTC Index - SASM - REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: STEERING ANGLE SENSOR MODULE (SASM)