Field Service

GM Historic (OBD I) Diagnostics

✓Field Service is a special diagnostic mode to monitor fuel system operation and read DTCs. Some GM service manuals may refer to this mode as the Field Service Mode Check. This mode works on vehicles equipped with a 12-pin ALDL connector with a wire present in pin-B, Diagnostic or Test Enable. The Scan Tool enters this mode by grounding pin-B: shorting pin-B to pin -A (ground).

✓Field Service mode can be operated with KOEO or KOER.

✓Vehicles equipped with climate control computers do not use Field Service mode.

✓Some 1994 and 1995 vehicles equipped with a 12-pin ALDL connector with pins A and B shorted will not cause the CHECK ENGINE light to flash codes.

From the Special Tests Menu:

1.Select Field Service.

•Use UP or DOWN arrow key until Field Service is highlighted.

•Press ENTER.

2.Check vehicle malfunction indicator lamp (MIL).

•Turn ignition key on, but do not start engine. The CHECK ENGINE light should flash. •Select YES to continue.

•If the light does not illuminate, either the vehicle does not support this test mode, the lamp is burned-out or circuit problems exist.

Special Tests Menu

Field Service Review Data Print Data Tool Setup

Test Availability

Does your CHECK

ENGINE light flash?

<Yes>

✓It is difficult to know exactly which GM vehicles use the Field Service mode. It is possible to have the Field Service mode function on the Special Tests Menu, and it not be applicable.

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 5 – 11

CP9185 specifications

The Actron CP9185 is a highly regarded automotive diagnostic scanner that is designed for both professional mechanics and DIY enthusiasts. This versatile tool brings a plethora of features and advanced technologies, making it essential for anyone looking to diagnose and repair vehicle issues efficiently.

One of the standout features of the Actron CP9185 is its ability to read and clear diagnostic trouble codes (DTCs) from various vehicles. This functionality allows users to quickly identify issues in a wide range of automotive systems, including the engine, transmission, and ABS. The scanner supports OBD II protocols, making it compatible with most vehicles manufactured after 1996, which significantly expands its usability across different makes and models.

The CP9185 comes equipped with an easy-to-read LCD display that showcases real-time data. Notably, this display features live data streaming, allowing users to monitor various parameters such as RPM, coolant temperature, and vehicle speed on-the-fly. This capability aids in pinpointing potential problems that may not be immediately evident from trouble codes alone.

Another important characteristic of the Actron CP9185 is its user-friendly interface. The device includes a built-in help menu and an intuitive navigation system, which simplifies the diagnostic process for users of all skill levels. The rugged design and ergonomic grip ensure durability, making it suitable for frequent use in workshop environments.

In terms of connectivity, the CP9185 features a USB port that allows users to update the device’s software and database. Regular updates ensure that the scanner is equipped with the latest codes and vehicle information, which enhances its effectiveness in performing diagnostics.

The Actron CP9185 also boasts an extensive library of manufacturer-specific codes, which can be invaluable for accurate diagnostics. This feature allows mechanics to delve deeper into vehicle-specific issues, ensuring more precise repairs.

Overall, the Actron CP9185 stands out as a reliable and efficient automotive diagnostic tool that combines essential features with advanced technology. Its comprehensive code-reading capabilities, real-time data display, and user-friendly design make it an indispensable instrument for anyone involved in automotive maintenance and repair. Whether you're a professional technician or a weekend warrior, the CP9185 can significantly enhance your diagnostic capabilities, making it a worthy investment for vehicle care.

Actron CP9185 manual From the Special Tests Menu Select Field Service

Models: CP9185