1999 PCED On Board Diagnostics II
SECTION 2: Diagnostic Methods
Diagnostic Monitoring Test Results

The purpose of this test mode is to allow access to the results of OBD II monitor diagnostic test results. The test values that are stored at the time of the particular monitor completion are displayed when the particular test identification is requested. Refer to the following table for test information.



 DIAGNOSTIC MONITORING TEST RESULTS TABLE

Module ID ha Test ID ha Component ID ha Test Description
      Oxygen Sensor Monitor (01-0F)
10 01 11 Sensor Voltage Amplitude - Bank 1, Sensor 1
10 01 21 Sensor Voltage Amplitude - Bank 2, Sensor 1
10 02 11 Upstream Static Shift, Lean Shift on EGO11
10 02 11 Upstream Static Shift, Rich Shift on EGO11
10 02 21 Upstream Static Shift, Lean Shift on EGO21
10 02 21 Upstream Static Shift, Rich Shift on EGO21
10 03 01 Upstream Switchpoint
10 03 02 Downstream Switchpoint
      Catalyst Monitor (10-1F)
10 10 11 Rear to Front Switch Ratio Test - Bank 1 test
10 10 21 Rear to Front Switch Ratio Test - Bank 2 test
      Evaporative Monitor (21-2F)
10 21b 00 Fuel Tank Pressure test - Low
10 21b 00 Fuel Tank Pressure test - High
10 22b 00 Evap-Phase 2 change in pressure test
10 23b 00 Evap-Phase 4 change in pressure too large
10 24b 00 Evap-Phase 4 change in pressure too small
10 25b 00 Evap-Phase 4 pressure build test-upper limit
      Secondary Air Monitor (30-3F)
10 30 11 O2S11 rich during flow test
10 30 21 O2S21 rich during flow test
10 30 12 O2S12 rich during flow test
10 31 00 O2Ss lean timer test
10 31 01 O2Ss lean timer test
      EGR System Monitor (41-4F)
10 41b 11 Upstream hose disconnected test
10 41b 12 Downstream hose disconnected test
10 45 20 Stuck Open Valve Test
10 4Ab 30 EGR Flow Test
10 4B 30 Flow test
      Misfire Monitor (51-5F)
10 50 00 Total Misfires that exceeded threshold
10 51 01 Cylinder #1 misfires that exceeded threshold
10 51 02 Cylinder #2 misfires that exceeded threshold
10 51 03 Cylinder #3 misfires that exceeded threshold
10 51 04 Cylinder #4 misfires that exceeded threshold
10 51 05 Cylinder #5 misfires that exceeded threshold
10 51 06 Cylinder #6 misfires that exceeded threshold
10 51 07 Cylinder #7 misfires that exceeded threshold
10 51 08 Cylinder #8 misfires that exceeded threshold
10 51 09 Cylinder #9 misfires that exceeded threshold
10 51 0A Cylinder #10 misfires that exceeded threshold
10 52 00 Consecutive cylinder events during active test
10 53 01 Misfire rate per 200 revs for Cylinder 1/Type A
10 53 02 Misfire rate per 200 revs for Cylinder 2/Type A
10 53 03 Misfire rate per 200 revs for Cylinder 3/Type A
10 53 04 Misfire rate per 200 revs for Cylinder 4/Type A
10 53 05 Misfire rate per 200 revs for Cylinder 5/Type A
10 53 06 Misfire rate per 200 revs for Cylinder 6/Type A
10 53 07 Misfire rate per 200 revs for Cylinder 7/Type A
10 53 08 Misfire rate per 200 revs for Cylinder 8/Type A
10 53 09 Misfire rate per 200 revs for Cylinder 9/Type A
10 53 0A Misfire rate per 200 revs for Cylinder 10/Type A
10 54 00 Highest misfire rate in 200 rev test/Type A
10 55 00 Highest misfire rate in 1000 rev test/Type B
10 56 00 Misfire monitor trip complete test

ha = hexadecimal

b = These test IDs are signed values. Scan tool may display them as unsigned.


The conversion is done as follows:

If the value is > 32767 then complement (change 0's to 1's and 1's to 0's), add 1 and a negative sign.

Example:



   
50000 = 1100001101010000
Complement of 50000 = 0011110010101111
  +1
  0011110010110000
Signed Value = -15536