STEP Diagnostics

Automotive diagnostics

The right next step.

For complex electrical
and communication faults.

STEP brings your symptoms, vehicle technical data, and test results together, then gives you one focused next check with the reasoning behind it.

Request access See a diagnostic case
You bringThe problem and test results
STEP connectsThe vehicle and the evidence
You getThe next right check

01 / A CASE IN MOTION

Follow the evidence.
Find the next step.See how STEP finds the next step

A complex automotive fault. A clear diagnostic path, one result at a time.Dash, windows and climate control fail together. Follow the evidence through seven diagnostic steps.

Illustrative case · 7 steps

STEP diagnostic conversationIllustrative case
JDTechnician

2017 XC60. Dash drops out, windows and climate stop working. Happens on and off. Still starts and drives. Where do I start?

Delivered · vehicle concern
The concern2017 Volvo XC60
Applicable diagrams, procedures and test information
SSTEP
Next step

Run a full-system scan

Connect the scan tool and record faults across all modules while the concern is present.

What this check answersIdentify the communication faults and affected systems before selecting a network test.
Recorded result

The scan records multiple lost-communication faults and medium-speed CAN bus faults.

A complex electrical problem. One clear next step.
Scroll to follow the case
  1. 01

    Capture the fault: Run a full-system scan

    Connect the scan tool and record faults across all modules while the concern is present.

    Result: The scan records multiple lost-communication faults and medium-speed CAN bus faults.

  2. 02

    Measure during the fault: Check the network signal

    Observe communication on the relevant network while the systems are failing.

    Result: No network activity is present; the signal is close to ground potential.

  3. 03

    Narrow the search: Test the connected branches

    Follow the diagram and compare the network response as the suspect areas are checked.

    Result: Door wiring checks and disconnecting the instrument cluster do not restore communication.

  4. 04

    Follow a new clue: Correlate movement with the fault

    Record whether physical movement in this area consistently changes the network signal.

    Result: Pressure on the dashboard changes the fault reproducibly.

  5. 05

    Locate the cause: Inspect the affected wiring route

    Inspect the harness around the climate-control and radio area for physical contact or damage.

    Result: A network wire is found touching a metal bracket behind the radio.

  6. 06

    Repair and retest: Retest the network after repair

    Confirm that communication operates correctly after repairing the wiring and protecting it from contact.

    Result: Normal network communication is restored.

  7. 07

    Verify the original concern: Verify the original failures

    Recheck the affected systems after reassembly and complete the road test.

    Result: The vehicle performs as expected during the final road test.

02 / How STEP does the work

Scattered information in.
The right next step out.

STEP does the work between the two.

The information

From you

Your vehicle. Your symptoms.
Your test results.

STEP gathers the story, scan reports, photos and measurements — including the details that are still missing.

SymptomsScans & photosMeasurements

MOTOR

motor.com

Vehicle technical information and manufacturer data, supplied to STEP under contract.

The diagnostic work

STEP

  1. STEP builds the case.

    It turns scattered information into facts, test history and open questions.

  2. STEP reads the technical picture.

    It sees wiring diagrams, reads connector views and locations, and relates manufacturer information to the case.

  3. STEP narrows the possibilities.

    It compares possible causes with the evidence and chooses a check that moves the diagnosis forward.

Your next right step

One specific
diagnostic check.

What to do.
Why it matters.
What result to report back.

A direction you can act on.

03 / The next right step, your way

Choose the support behind your next step.

Every plan is built around a clear diagnostic action, with the evidence and reasoning to move your case forward.

DIY

For vehicle owners

The next right check for your own vehicle.

$79 / year

Annual subscription
  • A focused next step for your electrical or communication fault
  • The reason for each check, tied to your case and vehicle data
  • A diagnostic path that develops with your results
Request DIY access

PRO

For mechanics and shops

Keep difficult cases moving, one right check at a time.

$199 / month

Monthly subscription
  • Guided next checks for complex electrical and network faults
  • Reasoning that builds on each measurement and result

Mobile mechanicsMore diagnostic reach and confidence at the vehicle.

Independent workshopsFill gaps in specialist knowledge and technical resources.

Request PRO access

PRO + Expert

With a live diagnostician

The next right step, with a professional alongside you.

$599 / month

Monthly subscription
  • Everything in PRO
  • Online support from a live professional diagnostician
  • Discuss results and work through the next check together

Support arrangements and availability are confirmed when we connect.

Request PRO + Expert access

Token usage is billed separately, in addition to the subscription price. Plan access, included capabilities, support availability, and vehicle coverage are confirmed before paid access begins.

04 / Request access

Bring your next
difficult case.

Tell us how you plan to use STEP. Get a clearer path through complex automotive electrical and communication faults.

Focused onAutomotive electrical faults.
Communication problems.
A clear next check.

Request access to STEP

We connect users in stages. Leave a request and we will contact you to confirm availability for your diagnostic work.

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Access request details

DIY: $79/year. PRO: $199/month. PRO + Expert: $599/month. Token usage is billed separately.

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