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CRP 429HD User's Manual
EN
It mainly includes the following functions:
1. Read Codes
This option is used to read the current, pending or permanent trouble codes.
2. Erase Codes
It is used to clear all existing trouble codes.
*Notes:
• Before performing this function, make sure to retrieve and record the trouble
codes.
• After clearing, you should retrieve trouble codes once more or turn ignition on
and retrieve codes again. If there are still some trouble codes in the system, please
troubleshoot the code using a factory diagnosis guide, then clear the code and
recheck.
3. I/M Readiness
I/M refers to Inspection and Maintenance that is legislated by the Government
to meet federal clean-air standards. I/M Readiness indicates whether or not the
various emissions-related systems on the vehicle are operating properly and are
ready for Inspection and Maintenance testing.
The purpose of the I/M Readiness Monitor Status is to indicate which of the
vehicle’s Monitors have run and completed their diagnosis and testing, and
which ones have not yet run and completed testing and diagnosis of their
designated sections of the vehicle’s emissions system.
The I/M Readiness Monitor Status function also can be used (after repair of
a fault has been performed) to confirm that the repair has been performed
correctly, and/or to check for Monitor Run Status.
Note: N/A means not available on this vehicle; INC means incomplete or not ready and
OK means Completed or Monitor Ok.
4. Data Stream
This item enables you to view all data stream items and the live waveform of all
selected items.
5. View Freeze Frame
When an emission-related fault occurs, certain vehicle conditions are recorded
by the on-board computer. This information is referred to as freeze frame data.
Freeze Data is a snapshot of the operating conditions at the time of an emission-
related fault.
