Many enthusiasts and DIY mechanics working on older Chrysler vehicles, especially those predating the widespread adoption of OBD2, face a unique challenge in diagnostics. While modern OBD2 scanners are readily available and offer extensive diagnostic capabilities for newer cars, their compatibility with older On-Board Diagnostic (OBD1) systems is often limited. However, owners of Actron OBD2 scanners, specifically models like the Actron 9145, might be surprised to discover a way to bridge this gap and access diagnostic features on their classic Chrysler vehicles.
The key to unlocking this capability lies in a simple yet effective accessory: the Actron CP9129 Chrysler adapter cable. This adapter acts as a bridge, allowing your standard Actron Obd2 Scanner Diagnostic Tester to interface with the diagnostic port found on many older Chrysler vehicles. This means that instead of relying solely on basic methods like the ignition key trick to retrieve fault codes, you can leverage the advanced features of your Actron scanner.
But what exactly does this expanded compatibility offer? Beyond simply reading and clearing diagnostic trouble codes (DTCs), using an Actron OBD2 scanner with the Chrysler adapter opens up a range of valuable diagnostic functions. These can include:
- Monitoring Battery Temperature and Charging Voltage: Essential for diagnosing charging system issues and battery health.
- A/C Clutch Relay and Brake Switch Operation Tests: Pinpointing problems within the air conditioning and braking systems.
- Actuator Tests: Verifying the functionality of ECU-controlled relays and components.
- Idle Speed Test: Analyzing and adjusting engine idle speed for optimal performance.
- Simulating Open/Closed Loop Operation: Useful for understanding fuel system behavior under different conditions.
- ASD Relay Operation and Shutdown Voltage Checks: Diagnosing issues related to the Automatic Shutdown Relay, crucial for engine management.
- Sensor Output Voltage Tests: Providing real-time data from critical sensors like IAT (Intake Air Temperature), CPS (Crankshaft Position Sensor), AIT (Ambient Intake Temperature), and MAP (Manifold Absolute Pressure) sensors.
To utilize these features, the Actron OBD2 scanner typically requires programming for the specific Chrysler vehicle year and engine being tested. This is usually done through user-friendly drop-down menus on the scanner interface, often extending back to 1989 models. It’s important to note that compatibility is generally dependent on the presence of a 6-pin diagnostic connector on the vehicle. While this adapter solution offers significant diagnostic capabilities, it’s worth mentioning that it may not extend to even older Renix systems, which utilize different diagnostic connectors primarily intended for dealership-level DRB analyzers.
In conclusion, for owners of Actron OBD2 scanners and older Chrysler vehicles equipped with the compatible diagnostic port, the Chrysler adapter cable presents a valuable tool. It significantly expands the diagnostic capabilities beyond basic code reading, offering a range of tests and monitoring functions that can greatly aid in troubleshooting and maintaining these classic vehicles. This approach brings functionality closer to that of more specialized diagnostic tools, making the Actron OBD2 scanner diagnostic tester a more versatile asset for automotive enthusiasts.
