'OBD'에 해당되는 글 6건
- 2008.11.14 OBD Chip Schematic 1
- 2008.11.10 OBDII Generic Communication Protocols by Manufacturer
- 2008.11.10 OBD 3-Pin Adapter
- 2008.10.29 ElmScan VPW Scan Tool
- 2008.10.06 OBD - Diagnostic Terminal
- 2008.10.06 OBD Trouble codes
OBD-2 universal cable scheme forPWM,VPW, andISO 9141-2 vehicles pinout
This device is a CMOS microcontroller which is designed to interface a personal computer or laptop with a vehicle"s On Board Diagnostic (OBD II) interface. It is intended to function with all three of the protocols used by vehicle manufacturers to implement the OBD II system as defined by SAE and ISO specifications. The OBD II system became mandatory for 1996 and up vehicles, but some vehicles were already fully or partially compatible with OBD II requirements prior to 1996. The chip is not suitable for the earlier vehicles such as OBD I. The device is intended to function as a simple scan tool and is capable of sending and receiving any OBD II message defined in SAE J1979 for any of the three types of OBDII bus implementations (PWM, VPW, ISO 9141-2). It can also be used as an inexpensive interface for custom instrumentation monitoring various vehicle parameters such as speed, RPM, coolant or intake air temperature, engine load, intake air flow rate, etc.
Components:
C5, C6 .01 UF, 25V C4 .1 UF, 25V C3 .47 UF, 50V C2,C1 20 pf, 50V R11, R12, R23, R9, R1, R3, R4, R25, R8 10 KOhm, 1/4 Watt R24 18 KOhm, 1/4 W R19, R18, R7, R20, R22, R5, R6, R13 1 KOhm, 1/4 W R21 5.6 KOhm, 1/4 W R16, R17 510 Ohm, 1/4 W R10 62 KOhm, 1/4 W R15 9.1 KOhm, 1/4 W R14 270 Ohm, 1/2 W R2 - Not used D2 1N4739 Zener, 9.1V, 1W D1, D3 1N4148 Diode Q3, Q4, Q5 PN2222 Transistor, NPN Q2 PN3904 Transistor, NPN Q1 PN3906 Transistor, PNP IC2 7805 Regulator, 5V IC3 LM339N Quad Comparator IC1 16F84-20 Microprocessor (firmware 1.07) XTL 1 20 MHz Crystal, 20 Mhz
If you don"t use PWM, you can omit R4, R6, R7, R8, R9, R10, Q1, Q2, D1.
If you don"t use ISO, you can omit R15, R16, R17, R18, R19, R21, Q4, Q5
If you don"t use VPW, you can omit R13, R14, R23, R24, D2, D3, Q3
Don"t connect external power sources - all power direved from pin 16 of OBDII
Serial port works at 19200 baud
Scheme is unuseful without .hex for IC1 firmware 1.07...
Can be replaced using scheme with ELM327 chip (http://www.elmelectronics.com/DSheets/ELM327DS.pdf). ELM327 even prvides more protocols, including CAN.
3-Pin to 12-Pin for IZUSU
 |
Isuzu/Delco 3-Pin ALDL Adapter Part Number: 02001325 Price: $52.00 USD |
Required for diagnosis of 1987 and newer Isuzu engines with Delco Electronics ECMs and 3-pin DLC. Used with the MTS 3100 Mastertech and Tech 1A with the GM 12-pin adapter (02001384).
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Isuzu/Hitachi 3-Pin ALDL Adapter Part Number: 02001326 Price: $52.00 USD |
Required for diagnosis of Isuzu vehicles equipped with Hitachi ECMs and 3-pin DLC. Used with the MTS 3100 Mastertech and Tech 1A with the GM 12-pin adapter (02001384).
Link : boschdiagnostics.com/parts/diagnostics/mts3100/Pages/MTS3100parts.aspx
VPW 형식을 지원하는 Scanner $34 불로 저렴한 편이다.
P/N: 420301
The ElmScan VPW Scan Tool can be used with our free software to turn your computer into a sophisticated auto diagnostic system. This interface supports the J1850 VPW protocol used mostly in General Motors vehicles..
Description
ElmScan VPW scan tool supports the J1850 VPW protocol used mostly in General Motors vehicles. Be sure to determine the communication protocol used in your vehicle before purchasing this scan tool.
| Processor: | ELM322, crystal-controlled for accuracy |
| OBD-II Protocols: |  J1850 VPW (Variable Pulse Width) |
| Output protocol: | RS232 |
| Indicator LEDs: | OBD Tx/Rx, RS232 Tx/Rx, Power |
| Operating voltage: | 12V, internal protection from short circuits/overvoltages |
| Dimensions: | 3"x4" (76x102 mm) |
Diagram
Multi-Port Fuel Injection
On Rodeo, Amigo, and Pickup (except 1993-95 models W/3.2L engine), connect the single wire diagnostic leads located behind the left hand kick panel together. On Trooper models to 1991, the single wire diagnostic connectors are located under the center console. On 1992-95 Trooper & 1993-95 Rodeo models W/3.2L engine, connect a jumper wire between data link connector terminals 1 and 3. On 1992-95 Trooper models the data link connector is located behind the lower front of the instrument panel. On 1993-95 Rodeo models W/3.2 engine, the data link is located under the left hand side of the instrument panel. On all models, turn the ignition switch to the On position. At this point, the "Check Engine" light should flash.
Isuzu Trouble codes
| 12 | No tach signal to ECM - No Distributor Reference Pulses{4} |
| 13 | Oxygen sensor or circuit |
|
14 |
Coolant Temperature Sensor Circuit |
|
High Coolant Temperature{5} | |
|
14A |
High Coolant Temperature{6} |
|
14B |
Low Coolant Temperature{6} |
|
15 |
Coolant Temperature Sensor Circuit |
|
Low Coolant Temperature{5}{7} | |
| 16 | Same as 15 |
|
21 |
TP Sensor And/Or Idle Switch |
|
MAP Sensor{1} | |
|
TP Sensor, Voltage High{5}{7} | |
| Throttle valve switch/Wide Open Throttle (WOT) position sensor, 1989 Manifold Absolute Pressure (MAP) circuit failure | |
| Throttle Position Sensor (TPS) - V6 models | |
|
21A |
TP Sensor, Voltage High{6} |
|
21B |
TP Sensor, Voltage Low{6} |
| 22 | Starter signal system/1988 and 1989 fuel cut solenoid circuit failure |
|
TP Sensor | |
|
TP Sensor, Voltage Low{5}{7} | |
|
No Starter Signal{8} | |
|
Fuel Cut Off Relay{4} | |
|
23 |
MAT Sensor |
|
MAT Sensor, Low Temp{7} | |
|
M/C Solenoid Circuit{4} | |
|
Mixture control solenoid circuit failure - 1987 and 1995 Amigo/Pick-up, 1989 to 1994 V6 models | |
|
Power transistor circuit - 1988 to 1994 four-cylinder models | |
| Intake Air Temperature sensor voltage high - turbo, 1989 to 1995 1.6L, 1.8L, 3.2L vehicles | |
|
23A |
MAT Sensor, Low Temp{6} |
|
23B |
MAT Sensor, High Temp{6} |
| 24 | Vehicle Speed Sensor (VSS) circuit - V6 models |
| Pressure regulator vacuum switching valve - 1988 to 1994 four-cylinder, also Impulse non-turbo | |
|
25 |
MAT Sensor |
|
Vacuum Switching Valve{4}{9} | |
|
MAT Sensor, High Temp{7} | |
| Intake Air Temperature sensor voltage high - turbo, 1989 to 1995 1.6L, 1.8L, 3.2L vehicles | |
| AIR VSV circuit failure | |
|
26 |
Canister Vacuum Switching Valve{4} |
|
VSV System{9} | |
|
27 |
VSV System{9} |
|
Constant Voltage High From VSV To ECM{4} | |
| Fuel injector driver transistor | |
|
31 |
No Ignition Reference Pulses To ECM{4} |
|
Wastegate Control{7}{8} | |
| No ignition reference to ECM - 1988 and 1989 models | |
| 32 | Exhaust Gas Recirculation (EGR) system failure |
|
33 |
MAP Sensor |
|
MAP Sensor, Voltage High{5}{7} | |
|
Fuel Injector{9} | |
|
33A |
MAP Sensor, Voltage High?Low{6} |
|
33B |
MAP Sensor, Voltage Low?High{6} |
|
34 |
MAP Sensor{8}{11} |
|
MAP Sensor, Voltage Low{5} | |
|
EGR Gas Sensor Circuit{4}{7} | |
|
Fuel Injector{10} | |
|
35 |
MAP Sensor Constant Voltage High{4} |
|
Power Transistor System{9} | |
|
36 |
MAP Sensor Circuit{4} |
|
41 |
Crank Angle Sensor{9} |
|
Cam Signal{7} | |
|
42 |
Fuel Cut Off Relay{4} |
|
Electronic Spark Timing{5} | |
|
Ignition Control Circuit{6}{8} | |
| 43 | Throttle valve switch/Wide Open Throttle (WOT) position sensor {9} |
| Electronic spark control failure - V6 models | |
| Idle contact switch always closed (1988 to 1994 four-cylinder, also Impulse non-turbo) | |
| 1989 Manifold Absolute Pressure (MAP) circuit failure | |
| Knock sensor (1989 to 1995 1.6L, 3.2L) {8} | |
|
44 |
O2S Lean |
|
Fuel Metering{9} | |
|
45 |
Oxygen sensor (rich condition indicated) |
|
Fuel Metering{9} | |
|
51 |
PROM{2}{8} |
|
Fuel Cut Solenoid Circuit And/Or ECM{3} carbureted four-cylinder models | |
|
ECM{6} | |
|
MEM-CAL{7} | |
|
PROM, Cal-Park & ECM{5} | |
|
ROM and/or RAM{9} | |
|
52 |
ECM{4} |
|
EEPROM{8} | |
|
ROM and/or RAM{9} | |
|
PROM, Cal-Park & ECM{5} | |
|
53 |
Switching Valve And/Or ECM{4} |
|
Vacuum Switching Valve{9} | |
|
54 |
M/C (mixture control) Solenoid Circuit And/Or ECM{2} |
|
Vacuum Control Solenoid And/Or ECM{3} | |
|
Power Transistor System{9} | |
|
Fuel Pump, Voltage Low{5}{8} | |
| Shorted vacuum control solenoid, Faulty Electronic Control Module (ECM) - 1988 and 1989 models | |
|
55 |
ECM{4}{8} |
|
PROM, Cal-Park & ECM{5} | |
| Faulty Electronic Control Module (ECM) or oxygen sensor | |
| 61 | Air flow sensor circuit failure {9} |
| 62 | Air flow sensor circuit failure {9} |
| 63 | Vehicle Speed Sensor (VSS) circuit {9} |
| 64 | Fuel injector driver transistor {9} |
|
65 |
Throttle valve switch/Wide Open Throttle (WOT) position sensor, 1989 Manifold Absolute Pressure (MAP) circuit failure |
|
Full throttle switch always on | |
| 66 | Knock sensor circuit failure {9} |
| 71 | Throttle position switch signal abnormal {9} |
| 72 | VSV for EGR system short or open {9} |
| 73 | Same as 72 transister or ground {9} |
|
{1}?1989 I-Mark. |
{2}?I-Mark, carbureted. |
|
{3}?Pickup, carbureted. |
{4}?Carbureted models. |
|
{5}?Throttle body fuel injection. |
{6}?Rodeo & Trooper w/3.2L engine, Stylus & 1990?92 Impulse less turbocharger. |
|
{7}?Stylus & 1990?92 Impulse w/turbocharger. |
{8}?I-Mark, multi-port fuel injection. |
|
{9}?Amigo, Pickup, Rodeo & Trooper w/2.6L engine & 1988?91 Impulse. |
{10}?Impulse. |
|
{11}?Amigo, Pickup, Rodeo & Trooper. |
