1. HOW TO USE GENERAL SCAN TOOL
1. Prepare a general scan tool required by SAE J1978.
2. Connect the general scan tool to data link connector located in the lower portion of the instrument panel (on the driver’s side).
3. Using the general scan tool, call up DTC and freeze frame data.
General scan tool functions consist of:
(1) MODE $01: Current powertrain diagnostic data
(2) MODE $02: Powertrain freeze frame data
(3) MODE $03: Emission-related powertrain DTC
(4) MODE $04: Clear/Reset emission-related diagnostic information
(5) MODE $06: Request on-board monitoring test results for intermittently monitored systems
(6) MODE $07: Request on-board monitoring test results for continuously monitored systems
(7) MODE $09: Request vehicle information
Read out the data according to repair procedures. (For detailed operation procedure, refer to the general scan tool instruction manual.)
NOTE:
For details concerning DTC, refer to “List of Diagnostic Trouble Code (DTC)”. 
2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)
Refer to data denoting the current operating condition of analog input/output, digital input/output or the powertrain system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
|
PID |
Data |
Unit of measure |
|
$01 |
Number of emission-related powertrain DTC, and malfunction indicator light status and diagnosis support information |
— |
|
$03 |
Fuel system control status |
— |
|
$04 |
Calculated engine load value |
% |
|
$05 |
Engine coolant temperature |
°C |
|
$06 |
Short term fuel trim |
% |
|
$07 |
Long term fuel trim |
% |
|
$0B |
Intake manifold absolute pressure |
kPa |
|
$0C |
Engine speed |
rpm |
|
$0D |
Vehicle speed |
km/h |
|
$0E |
Ignition timing advance |
° |
|
$0F |
Intake air temperature |
°C |
|
$10 |
Air flow rate from mass air flow sensor |
g/s |
|
$11 |
Throttle valve absolute opening angle |
% |
|
$13 |
Check whether oxygen sensor is installed. |
— |
|
$15 |
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (Bank 1 Sensor 2) |
V and % |
|
$19 |
Oxygen sensor correction (bank 2 sensor 2) |
% |
|
$1C |
Supporting OBD system |
— |
|
$1F |
Time Since Engine Start |
sec |
|
$21 |
Travel distance after the malfunction indicator light illuminates |
km |
|
$24 |
A/F value and A/F sensor output voltage (Bank 1 Sensor 1) |
— and V |
|
$2C |
Commanded EGR |
sec |
|
$2D |
EGR Error |
% |
|
$2E |
Commanded Evap Purge |
% |
|
$2F |
Fuel level |
% |
|
$30 |
Number of warm ups after DTC clear |
— |
|
$31 |
Travel distance after DTC clear |
km |
|
$33 |
Atmosphere Pressure |
mmHg |
|
$34 |
A/F value and A/F sensor current (Bank 1 Sensor 1) |
— and mA |
|
$3C |
Catalyst temperature #1 |
°C |
|
$41 |
Diagnostic monitor of each drive cycle |
— |
|
$42 |
Control module voltage |
V |
|
$43 |
Absolute Load Value |
% |
|
$44 |
Target Equivalence Ratio |
— |
|
$45 |
Relative Throttle Pos. |
% |
|
$46 |
Ambient Temperature |
°C |
|
$47 |
Absolute Throttle Pos.#2 |
% |
|
$49 |
Accelerator Pedal Pos.#1 |
% |
|
$4A |
Accelerator Pedal Pos.#2 |
% |
|
$4C |
Target Throt. Act. Cont. |
% |
|
$4D |
Engine operating time while malfunction indicator lit |
min |
|
$4E |
Time since DTC cleared |
min |
|
$51 |
Type of fuel |
— |
|
$5A |
Relative Accelera. Pos. |
% |
NOTE:
Refer to general scan tool manufacturer’s instruction manual to access current powertrain diagnostic data (MODE $01).
3. MODE $02 (POWERTRAIN FREEZE FRAME DATA)
Refer to data denoting the operating condition when trouble is detected by on-board diagnosis system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
|
PID |
Data |
Unit of measure |
|
$02 |
DTC of freeze frame data |
— |
|
$03 |
Fuel system control status |
— |
|
$04 |
Calculated engine load value |
% |
|
$05 |
Engine coolant temperature |
°C |
|
$06 |
Short term fuel trim (Bank 1 Sensor 1) |
% |
|
$07 |
Long term fuel trim (Bank 1 Sensor 1) |
% |
|
$0B |
Intake manifold absolute pressure |
kPa |
|
$0C |
Engine Speed |
rpm |
|
$0D |
Vehicle Speed |
km/h |
|
$0E |
Ignition timing advance |
° |
|
$0F |
Intake air temperature |
°C |
|
$10 |
Air flow rate from mass air flow sensor |
g/s |
|
$11 |
Throttle valve absolute opening angle |
% |
|
$13 |
Check whether oxygen sensor is installed |
— |
|
$15 |
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (Bank 1 Sensor 2) |
V and — |
|
$1C |
Supporting OBD system |
— |
|
$1F |
Time Since Engine Start |
sec |
|
$2C |
Commanded EGR |
% |
|
$2D |
EGR Error |
% |
|
$2E |
Commanded Evap Purge |
% |
|
$2F |
Fuel level |
% |
|
$33 |
Atmosphere Pressure |
mmHg |
|
$42 |
Control module voltage |
V |
|
$43 |
Absolute Load Value |
% |
|
$44 |
Target Equivalence Ratio |
— |
|
$45 |
Relative Throttle Pos. |
% |
|
$46 |
Ambient Temperature |
°C |
|
$47 |
Absolute Throttle Pos.#2 |
% |
|
$49 |
Accelerator Pedal Pos.#1 |
% |
|
$4A |
Accelerator Pedal Pos.#2 |
% |
|
$4C |
Target Throt. Act. Cont. |
% |
NOTE:
Refer to general scan tool manufacturer’s instruction manual to access freeze frame data (MODE $02).
4. MODE $03 (EMISSION-RELATED POWERTRAIN DTC)
Refer to “Read Diagnostic Trouble Code (DTC)” for information about data denoting emission-related powertrain DTC.
5. MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)
Refer to the mode used to clear or reset emission-related diagnostic information.
NOTE:
Refer to general scan tool manufacturer’s instruction manual to clear the emission-related diagnostic information (MODE $04).
Refer to test value of troubleshooting and data of test limit indicated on the support data bit sequence table. A list of the support data is shown in the following table.
|
OBDMID |
TID |
SID |
Diagnostic item |
|
$01 |
$81 |
$0A |
A/F sensor continuity abnormal (Bank 1 Sensor 1) |
|
$82 |
$8D | ||
|
$83 |
$14 | ||
|
$84 |
$1E |
A/F sensor range abnormal (Bank 1 Sensor 1) | |
|
$85 |
$1E | ||
|
$86 |
$20 |
A/F sensor response abnormal (Bank 1 Sensor 1) | |
|
$02 |
$87 |
$0B |
Oxygen sensor drop abnormal (Bank 1 Sensor 2) |
|
$88 |
$0B | ||
|
$07 |
$0B |
Oxygen sensor drop failure (Bank 1 Sensor 2) | |
|
$08 |
$0B | ||
|
$A5 |
$0B | ||
|
$05 |
$10 |
Oxygen sensor response abnormal (Bank 1 Sensor 2) | |
|
$06 |
$10 | ||
|
$21 |
$89 |
$20 |
Catalyst deterioration diagnosis (Bank 1) |
|
$31 |
$8A |
$FD |
EGR System Diagnosis |
|
$41 |
$99 |
$24 |
A/F sensor heater abnormal (Bank 1 Sensor 1) |
|
$9A |
$24 | ||
|
$9B |
$14 |
A/F sensor heater characteristics abnormal (Bank 1 Sensor 1) | |
|
$42 |
$9C |
$24 |
Oxygen sensor heater abnormal (Bank 1 Sensor 1) |
|
$9D |
$24 |
Refer to the data of DTC (pending code) for troubleshooting result about emission in the first time.
Refer to data of vehicle specification (V.I.N., calibration ID, diagnosis frequency etc.).