User manual

21
On-Board Diagnostics (OBD) Diagnostic Service Definitions
The scan tool checks if the readiness status of oxygen sensors is completed. If the test is not
completed, the scan tool displays a warning.
Figure 4-4
Test ID Values Example
NOTE:
i Refer to Table 4-5 for an explanation of the individual Test ID numbers.
NOTE:
i Not all test values are applied on or supported by all vehicles. Only supported Test IDs appear in
the selection list.
$06 $05
$07
$08
$0A $09
$04
$03
$02
$01
Rich
Lean
Oxygen
Sensor
Output
Numbers Refer to Test ID
Table 4-5 Test ID Table
Test ID No. Description
$01 Rich to Lean sensor threshold voltage (constant)
$02 Lean to Rich sensor threshold voltage (constant)
$03
Low sensor voltage for switch time calculation
(constant)
$04
High sensor voltage for switch time calculation
(constant)
$05 Rich to Lean sensor switch time (calculated)
$06 Lean to Rich sensor switch time (calculated)
$07 Minimum sensor voltage for test cycle (calculated)
$08 Maximum sensor voltage for test cycle (calculated)
$09 Time between sensor transitions (calculated)
$0A Sensor Period (calculated)
$0B
EWMA (Exponential Weighted Moving Average)
misfire counts for last 10 driving cycles (calculated)
Calculation: 0.1 * (current counts) + 0.9 * (previous
average)
Initial value for (previous average) = 0
$0C
Misfire counts for last/current driving cycles
(calculated)