Diagnostic Mode 02 - Read Operating Conditions
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.
Depending on scan tool and protocol used, the information in diagnostic mode 02 may be referred to by different names such as Test-ID (TID), Hex-ID, Component-ID (CID), or On-Board Diagnostic Monitor Identifier (OBDMID).
Procedure
-- CONNECT: Scan Tool
-- START ENGINE: Idle
If the engine does not start, crank the engine using starter for at least 5 seconds, do not switch ignition off afterward.
-- Select "Diagnostic Mode 2: Obtain operating conditions ".
-- From the following table, select the desired the "PID", e.g. "PID $05 Coolant temperature" that is to be monitored.
The current values of the component or system that is being monitored will be displayed on the scan tool screen.
| PID | Component or System |
|---|---|
| $00: | Supported PIDs $01-$20 |
| $02: | Error code that has the freeze frame storage dissolves out |
| $03: | Fuel system status |
| $04: | Calculated load value |
| $05: | Coolant temperature |
| $06: | Lambda integrator Bank 1 |
| $07: | Lambda value adaptation Bank 1 |
| $0B: | Manifold Absolute Pressure |
| $0C: | Engine RPM |
| $0D: | Vehicle speed |
| $0E: | Firing angle cylinder 1 |
| $0F: | Intake Air Temperature |
| $11: | Throttle valve 1, sensor 1, throttle position absolutely |
| $12: | Secondary air status |
| $1F: | Time since engine start |
| $20: | Supported PIDs $21-$40 |
| $23: | Fuel pressure |
| $2E: | Tank vent valve activation |
| $2F: | Fuel Level (if used for diagnostics) |
| $33: | Barometric pressure |
| $40: | Supported PIDs $41-$60 |
| $42: | Engine Control Module system voltage |
| $43: | Absolute Load |
| $44: | Lambda specified value |
| $45: | Relative Throttle Position |
| $46: | Ambient temperature |
| $47: | Throttle valve 1, Sensor 2, Throttle valve position absolute |
| $49: | Absolute Pedal Position |
| $4A: | Redundant Absolute Pedal Position |
| $4C: | Commanded Throttle Motor Position |
| $51: | Fuel Type |
| $56: | Offset oxygen sensor regulation after catalytic converter, Bank 1 |
| $60: | Supported PIDs $61-$80 |
| $70: | Boost Pressure Control |
-- Switch Ignition OFF