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Compares cranking pressure under controlled conditions; interpretation depends on engine and test setup.
Diagnostic toolsEvaluates battery performance using a defined method after state of charge is considered.
Diagnostic toolsHelps locate certain intake or EVAP leaks when used at an approved pressure and connection point.
Diagnostic toolsApplies controlled pressure to a cool system for leak inspection. Never exceed the specified test pressure.
Specialty toolsSeparate missing ignition, fuel delivery, control, synchronization, and mechanical evidence after the engine is confirmed to crank.
Test-first procedureSeparate 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 procedureUse warning behavior, scan context, cylinder pattern, and controlled contribution evidence to separate ignition, fuel, air, and mechanical branches.
Test-first procedureUse controlled pressure on a cool system to investigate leaks without opening a hot, pressurized cooling circuit.
Test-first procedureThe control module detected a misfire pattern associated with cylinder 1. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 2. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 3. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 4. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 5. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 6. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 7. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 8. It does not identify the failed component.
Generic codeAI guidance is separate from verified IAR sources.
Feedback stays on this device and isn’t sent to IAR. Vehicle identifiers are redacted before saving.