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Helps locate certain intake or EVAP leaks when used at an approved pressure and connection point.
Diagnostic toolsEvaluates battery performance using a defined method after state of charge is considered.
Diagnostic toolsCompares cranking pressure under controlled conditions; interpretation depends on engine and test setup.
Diagnostic toolsApplies controlled pressure to a cool system for leak inspection. Never exceed the specified test pressure.
Specialty toolsClassify smoke or a burning smell by location, color, timing, and nearby systems before attempting another drive or touching a hot component.
intermediateA wheel that locks, a brake that stays applied, or a vehicle that pulls with heat or odor can become a control and fire hazard. Stop driving and separate friction, hydraulic, parking-brake, mechanical, and control evidence with the exact vehicle procedure.
professional recommendedSeparate state of charge, battery condition, and connection problems before blaming the starter or alternator.
Test-first procedureCheck whether the vehicle is replenishing electrical energy under its intended operating strategy instead of applying one universal voltage rule.
Test-first procedureSeparate start-request, interlock, cable, ground, solenoid, and starter-motor evidence before bypassing the circuit or replacing the starter.
Test-first procedureSeparate missing ignition, fuel delivery, control, synchronization, and mechanical evidence after the engine is confirmed to crank.
Test-first procedureUse controlled pressure on a cool system to investigate leaks without opening a hot, pressurized cooling circuit.
Test-first procedureAI guidance is separate from verified IAR sources.
Feedback stays on this device and isn’t sent to IAR. Vehicle identifiers are redacted before saving.