Perform a comprehensive diagnostic scan on the 2024 Rivian EDV 500 electric delivery van using Rivian factory diagnostic equipment to identify fault codes and system status across all vehicle modules.

Warnings

Tools required

Preparation

1. Ensure vehicle has at least 30% state of charge in high voltage battery before starting diagnostics
2. Connect 12V battery maintainer to prevent auxiliary battery depletion during extended diagnostic session
3. Park vehicle on level ground in well-ventilated area with adequate lighting
4. Turn off all unnecessary electrical accessories and close all doors except driver door
5. Verify internet connectivity if using cloud-based Rivian diagnostic system
6. Obtain customer complaint details and any relevant service history
7. Document current odometer reading and date for service records

Procedure

1. 1

   Locate and Access OBD-II Diagnostic Port
   Open driver door and locate the OBD-II diagnostic port under the lower dash panel to the left of the steering column. Remove any protective cover if present. Verify port is clean and pins are not damaged or corroded.
2. 2

   Connect Diagnostic Equipment
   Connect the J2534 pass-thru device or Rivian Diagnostic System interface to the OBD-II port firmly until it clicks into place. Connect the USB cable from the diagnostic interface to the laptop. Ensure all connections are secure before proceeding.
3. 3

   Power Up Vehicle Systems
   Without pressing the brake pedal, press the power button once to place vehicle in Accessory mode. Wait 30 seconds for all modules to initialize and complete self-tests. Observe instrument cluster for any immediate warning lights or messages.
4. 4

   Launch Diagnostic Software and Establish Communication
   Open Rivian diagnostic software on laptop and select '2024 EDV 500' from vehicle menu. Enter VIN when prompted and verify it matches vehicle. Click 'Connect' and wait for software to establish communication with all vehicle control modules. This may take 2-3 minutes for initial handshake with all 30+ modules in the EDV system.
5. 5

   Perform Global System Scan
   Select 'Global Scan' or 'Scan All Modules' from diagnostic menu. Allow software to interrogate all control modules including Battery Management System (BMS), Motor Control Units (front and rear), Vehicle Control Unit (VCU), Gateway, ADAS modules, Body Control Module, and all auxiliary systems. Document total number of modules detected and any modules that fail to communicate.
6. 6

   Review and Document Diagnostic Trouble Codes
   Review all Diagnostic Trouble Codes (DTCs) retrieved from scan. Document each code with module name, DTC number, description, and status (current, pending, or stored/history). Pay special attention to high voltage system codes (P codes starting with P0A, P0B, P0C), motor control codes, and battery thermal management codes. Take screenshots or print results for service file.
7. 7

   Check High Voltage Battery Status
   Navigate to Battery Management System module. Review live data for: overall state of charge, individual cell voltages (look for variance >50mV between cells), battery temperature sensors (all zones), isolation resistance (should be >500 ohms/volt), and charge/discharge current. Document any cells showing voltage deviation or temperature anomalies.
8. 8

   Inspect Motor Control Unit Parameters
   Access both front and rear Motor Control Unit modules. Review resolver positions, motor temperatures, inverter temperatures, phase current readings, and any motor fault counters. Verify motor encoder values are within specification and no over-temperature events are logged. Check for any regenerative braking system faults.
9. 9

   Verify Thermal Management System Operation
   Navigate to thermal management control module. Check coolant temperature sensors for EV battery and motors, verify coolant pump operation status, check chiller and heater operation logs. Review any thermal runaway protection events or cooling system performance codes. Ensure battery thermal conditioning is operating within parameters.
10. 10

    Check ADAS and Safety Systems
    Scan all Advanced Driver Assistance System modules including forward collision warning, automatic emergency braking, lane keep assist, and camera/radar modules. Document any calibration requirements, especially if vehicle has had windshield replacement or collision repair. Check airbag system for deployment history and sensor status.
11. 11

    Review Charging System Status
    Access onboard charger module and DC fast charge controller. Review charge history, any charge interruption events, inlet temperature sensor readings, and J1772/CCS communication logs. Check for any ground fault detection events or isolation monitoring system warnings that could prevent charging.
12. 12

    Perform System Tests and Actuator Checks
    If diagnostic software allows and customer concern warrants, perform bi-directional control tests on specific components. Test 12V battery charging from DC-DC converter, HVAC blower operation, coolant pump activation, and brake system actuators. Document results of any active tests performed. Do not perform motor rotation tests without proper wheel support and safety procedures.
13. 13

    Capture Freeze Frame and Snapshot Data
    For any significant DTCs, capture freeze frame data showing vehicle operating conditions when fault occurred. Take snapshots of relevant live data parameters for analysis. Save all data to service file and Rivian cloud system if connected for engineering review if needed.
14. 14

    Generate and Save Diagnostic Report
    Use diagnostic software to generate comprehensive scan report including all modules scanned, DTCs found, live data captures, and system test results. Save report to vehicle service history and local records. Print customer-facing summary if needed. Note any immediate safety concerns requiring urgent attention.
15. 15

    Disconnect Equipment and Restore Vehicle
    Close diagnostic software properly to end communication session. Power down vehicle by pressing power button. Disconnect USB cable and remove diagnostic interface from OBD-II port. Reinstall any port cover. Disconnect 12V battery maintainer. Review all findings and determine next repair steps based on diagnostic results.

Reassembly

1. No disassembly required for this procedure

Verification

• Verify all DTCs have been properly documented with module locations and descriptions
• Confirm diagnostic report has been saved to both local and cloud-based service systems
• Ensure vehicle powers on normally and no new warning lights appear after diagnostic session
• Verify 12V battery voltage is above 12.4V after diagnostics (recharge if needed)
• Review findings with service advisor or customer to determine required repairs
• Create repair estimate based on identified faults and Rivian service procedures
• Schedule any required follow-up repairs or component replacements
• If no faults found, document 'No Fault Found' and provide customer with clean scan report

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