Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHRYSLER2004CROSSFIRE STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - ELECTRICAL DIAGNOSTICSDIAGNOSIS AND TESTINGDTC P0123: APPS SIGNAL #1 CIRCUIT HIGHDIAGNOSTIC TEST4. APPS #1 SIGNAL CIRCUIT SHORTED TO 5-VOLT SUPPLY CIRCUIT
2004 Chrysler Crossfire Standard
4. Apps #1 Signal Circuit Shorted To 5-Volt Supply Circuit
2004 Chrysler Crossfire StandardSECTION 4. Apps #1 Signal Circuit Shorted To 5-Volt Supply Circuit
Turn the ignition off.
Measure the resistance of the APPS #1 Signal circuit and the 5-Volt Supply circuit at the APPS harness connector.
Fig 1: Measuring Resistance Of APPS #1 Signal Circuit At 5-Volt Supply Circuit At APPS Harness Connector
Is the resistance below 100 ohms?
- Yes >> Repair the APPS #1 Signal circuit for a short to the 5-Volt Supply circuit.
- No >> Go To 5
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.