Diagnostic Mode 02 - Read Operating Conditions

Diagnostic Modes 01 - 09

Diagnostic Mode 02 - Read Operating Conditions

The information provided in Modes 01 through 09 displays the various levels of emission related data that may be monitored, as well as the ability to retrieve and read stored DTC trouble codes, erase stored DTC trouble codes, generate readiness codes, and select the various PIDs and Test-IDs used within the modes to monitor the engine, and emission related component parameters.

When an emissions-related fault (pending DTC, visible in mode 07) is first detected, operating conditions are stored. Mode 02 makes it possible to access this freeze frame data as soon as this fault is shown in mode 03. Each control module only shows freeze frame data for one fault via mode 02. Therefore, there are two priority levels. If there is a malfunction with higher priority, the freeze frame data is overwritten.

- Fault with higher priority: Misfire malfunction or fuel trim malfunction.

- Fault with normal priority: All other emissions-related faults.

Procedure

- Connect diagnostic tester.

- Depending on the desired operating condition:switch on ignition

or start engine and let run at idle.

- Under address word 33, select "Diagnostic mode 2: Check operating conditions."

- Select desired operating condition "PID XX".

• The operating conditions are sorted by the PID (parameter-identifications).

• Bank 1 = Cylinder bank 1, in direction of travel, right

• Bank 2 = Cylinder bank 2, in direction of travel, left

• Measuring values of Engine Control Module (ECM) are displayed under "10 - Engine electronics" and measuring values of Transmission Control Module (TCM) are displayed under "1A - Transmission electronics".





* PIDs that are not relevant are not listed.

If DTCs are displayed in "PID 02":

- Repair stored malfunctions according to DTC table:

• SAE P0xxx-DTCs => [ SAE P0xxx DTCs ] Testing and Inspection

• SAE P1xxx-DTCs => [ SAE P1xxx DTCs ] Testing and Inspection

• SAE P2xxx-DTCs => [ SAE P2xxx DTCs ] Testing and Inspection

• SAE P3xxx-DTCs => [ SAE P3xxx DTCs ] Testing and Inspection

• SAE U0xxx-DTCs => [ SAE U0xxx DTCs ] Testing and Inspection

- End diagnosis and switch ignition off.