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On-Board Diagnostics (OBD) Basics Diagnostic Service Definitions

Ford conversion factor: multiply the value by 0.0156 to get a value from 0 to 1.0.

This catalyst is about to fail. Normal readings for a good catalyst should be approximately

0to0.1(switch ratio).

Service $06 Notes

Consider the following when performing this service:

• If in Service $01 (Readiness Test Status) one of the tests is not completed, a warning

message displays indicating that the values may be invalid or not available.

• Not all test values are applicable or supported by all vehicles. Only supported Test IDs appear

on the selection list. To be able to select none supported Test IDs, the last item of the selection

list is Manual Selection of Test ID.

• This service can be used as an alternative to Service $05 to report oxygen sensor test results

The values are not converted and are displayed in standard units.

4.4.7 Service $07:

Emission-related DTCs detected during Current or

Last Completed Drive Cycle (Pending Codes)

The purpose of this service is to enable the scan tool to obtain “pending” or maturing diagnostic

trouble codes. These are codes for emission-related components or systems that are tested or

continuously monitored during normal driving conditions that were detected during the current or

last completed driving cycle.

Test results for these components or systems are reported in the same format as the DTCs in

Service $03; refer to Emission-related DTCs on page 14.

The intended use of this service is to assist the service technician after a vehicle repair and after

clearing diagnostic information, by reporting test results after a single driving cycle.

• If a test failed during the driving cycle, the DTC associated with that test will be reported. If the

pending fault does not occur again within 40 to 80 warm-up cycles, the fault is automatically

cleared from memory.

• Test results reported by this service do not necessarily indicate a faulty component or system.

If test results indicate a failure again after additional driving, then a DTC sets with Service $03,

which indicates a faulty component or system. The MIL is illuminated.

This service can always be used to request the results of the latest test, independent of the setting

of a DTC.

Table 4-7

Calculated values

Item Factor Result

Bank 1 45 * 0.0156 0.702

Bank 2 42 * 0.0156 0.655

Threshold 48 * 0.0156 0.749

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 71 72

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