3. OBD-II System Readiness Tests
- Catalyst monitoring The catalyst efficiency monitor is a self-test strategy within the ECM or PCM that uses the downstream Heated Oxygen Sensor (HO2S) to determine when a catalyst has fallen below the minimum level of effectiveness in its ability to control exhaust emission.
- Misfire monitoring Misfire is defined as the lack of proper combustion in the cylinder due to the absence of spark, poor fuel metering, or poor compression. Any combustion that does not occur within the cylinder at the proper time is also a misfire. The misfire detection monitor detects fuel, ignition or mechanically induced misfires. The intent is to protect the catalyst from permanent damage and to alert the customer of an emission failure or an inspection maintenance failure by illuminating the MIL. When a misfire is detected, special software called freeze frame data is enabled. The freeze frame data captures the operational state of the vehicle when a fault is detected from misfire detection monitor strategy.
- Evaporative emission system monitoring The EVAP. monitoring is a self-test strategy within the ECM or PCM that tests the integrity of the EVAP. system. The complete evaporative system detects a leak or leaks that cumulatively are greater than or equal to a leak caused by a 0.040 inch and 0.020 inch diameter orifice.
- Fuel system monitoring The fuel system monitor is a self-test strategy within the ECM or PCM that monitors the adaptive fuel table The fuel control system uses the adaptive fuel table to compensate for normal variability of the fuel system components caused by wear or aging. During normal vehicle operation, if the fuel system appears biased lean or rich, the adaptive value table will shift the fuel delivery calculations to remove bias.
- Oxygen sensor monitoring OBD-II regulations require monitoring of the upstream Heated O2 Sensor (H2OS) to detect if the deterioration of the sensor has exceeded thresholds. An additional HO2S is located downstream of the Warm-Up Three Way Catalytic Converter (WU-TWC) to determine the efficiency of the catalyst. Although the downstream H2OS is similar to the type used for fuel control, it functions differently. The downstream HO2S is monitored to determine if a voltage is generated. That voltage is compared to a calibrated acceptable range.
- 7) Engine cooling system monitoring The cooling system monitoring is a self-test strategy within the ECM or PCM that monitors ECTS (Engine Coolant Temperature Sensor) and thermostat about circuit continuity, output range, rationality faults.
- 8) Cold start emission reduction strategy monitoring Catalyst heating function is used to reduce cold start emission. Combination of increased engine speed and air mass flow rate (MAF) and also spark timing retardation results in faster exhaust gas temperature increase. It can be realized by opening more idle speed actuator during catalyst heating phase. If lower air path restriction happens, engine torque is slightly decreased due to low MAF. A low MAF is compensated by spark advance increase to keep constant engine torque. But engine speed deviation does not happen in this time. If higher air path restriction happens, even though spark timing compensates, engine speed cannot meet the target engine speed due to very low MAF. Therefore, key control parameter for catalyst heating function is air path. Air path is represented as MAF deviation in EMS control parameter.
- 9) CVVT system monitoring Continuously Variable Valve Timing (CVVT) monitoring is divided in two parts: Check steady deviation between camshaft set-point and actual camshaft position Check camshaft position response during changing camshaft set-point
- 10) Comprehensive components monitoring The comprehensive components monitoring is a self-test strategy within the ECM or PCM that detects fault of any electronic powertrain components or system that provides input to the ECM or PCM and is not exclusively an input to any other OBD-II monitor.
- 11) Air conditioning system monitoring The A/C system monitoring is a self-test strategy within the ECM or PCM that monitors malfunction of all A/C system components at A/C ON. Requirement: If a vehicle incorporates an engine control strategy that alters off idle fuel and/or spark control like when the A/C system is on, the OBD II system shall monitor all electronic air conditioning system components for malfunctions. If the system were to fail, it would invoke alternate control while the A/C system is on or cause the system to invoke an alternate control while the A/C system is off. Additionally, the OBD II system shall monitor for malfunction all electronic air conditioning system components that are used as part of the diagnostic strategy for any other monitored system or component. Implementation plan: Malfunction of A/C system components is not used as a part of the diagnostic strategy for other monitored system or component.
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- PCM harness connector
- PCM terminal function Connector [C01-K] PIN DESCRIPTION Pin Description Connected to 1 Power ground Chassis ground 2 Battery voltage supply after ignition switch Ignition Switch 3 Power ground Chassis ground 4 Battery voltage supply after main relay Main Relay 5 Power ground Chassis ground 6 Battery voltage supply Battery 7 Wheel speed sensor (WSS) [+] signal input Wheel speed sensor (WSS) 8 - 9 Fuel level sensor (FLS) signal input Fuel level sensor (FLS) 10 - 11 - 12 Knock sensor (KS) signal input Knock sensor (KS) 13 Sensor ground Accelerator position sensor #2 14 Sensor ground Engine coolant temperature sensor (ECTS) 15 Camshaft position sensor (CMPS) #2 signal input Camshaft position sensor (CMPS) #2 16 - 17 Crankshaft position sensor (CKPS) signal input Crankshaft position sensor (CKPS) 18 VS-/IP- (Common ground for VS, IP) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] 19 VS+ (Nernst cell voltage) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] 20 Sensor ground Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] 21 - 22 - 23 Fuel consumption signal output Trip computer 24 - 25 Injector (Cylinder #1) control output Injector (Cylinder #1) 26 Injector (Cylinder #3) control output Injector (Cylinder #3) 27 Injector (Cylinder #4) control output Injector (Cylinder #4) 28 Injector (Cylinder #2) control output Injector (Cylinder #2) 29 Wheel speed sensor (WSS) [-] signal input Wheel speed sensor (WSS) 30 Sensor power (+5V) Manifold absolute pressure sensor (MAPS) 31 Manifold absolute pressure sensor (MAPS) signal input Manifold absolute pressure sensor (MAPS) 32 Throttle position sensor (TPS) #2 signal input Throttle position sensor (TPS) #2 [ETC module] 33 Engine coolant temperature sensor (ECTS) signal input Engine coolant temperature sensor (ECTS) 34 Sensor ground Knock sensor (KS) 35 Accelerator Position Sensor (APS) #2 signal input Accelerator Position Sensor (APS) #2 36 Sensor power (+5V) Accelerator Position Sensor (APS) #2 37 Sensor ground Camshaft position sensor (CMPS) #2 38 - 39 Sensor ground Crankshaft position sensor (CMPS) 40 Vehicle speed signal input ABS/VDC control module 41 - 42 RC (Compensated Resistance) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] 43 Sensor power (+5V) A/C pressure transducer (APT) 44 - 45 - 46 - 47 - 48 - 49 - 50 Variable intake solenoid valve (VIS) control output Variable intake solenoid valve (VIS) 51 Battery voltage supply after main relay Main relay 52 Fuel tank pressure sensor (FTPS) signal input Fuel tank pressure sensor (FTPS) 53 Intake Air temperature sensor (IATS) signal input Intake Air temperature sensor (IATS) 54 A/C pressure transducer (APT) signal input A/C pressure transducer (APT) 55 - 56 - 57 Sensor ground A/C pressure transducer (APT) 58 - 59 Sensor ground Throttle position sensor (TPS) #1,2 [ETC module] 60 Sensor power (+5V) Accelerator Position Sensor (APS) #1 61 Sensor ground Accelerator Position Sensor (APS) #1 62 Camshaft position sensor (CMPS) #1 signal input Camshaft position sensor (CMPS) #1 63 Sensor power (+5V) Throttle position sensor (TPS) #1,2 [ETC module] 64 Main relay control output Main relay 65 Cooling fan relay [Low] control output Cooling fan relay 66 CVVT Oil control valve (OCV) #1 control output CVVT Oil control valve (OCV) #1 67 Purge control solenoid valve (PCSV) control output Purge control solenoid valve (PCSV) 68 CVVT Oil control valve (OCV) #2 control output CVVT Oil control valve (OCV) #2 69 Immobilizer lamp control output Immobilizer lamp (Cluster) 70 Fuel pump relay control output Fuel pump relay 71 ETC motor [A] control output ETC motor [ETC module] 72 ETC motor [B] control output ETC motor [ETC module] 73 Sensor ground Fuel tank pressure sensor (FTPS) 74 Sensor ground Manifold absolute pressure sensor (MAPS), Intake Air temperature sensor (IATS) 75 Immobilizer communication line Immobilizer control module 76 - 77 CAN [High] ABS/VDC control module 78 CAN [Low] ABS/VDC control module 79 - 80 Throttle position sensor (TPS) #1 signal input Throttle position sensor (TPS) #1 [ETC module] 81 - 82 Accelerator Position Sensor (APS) #1 signal input Accelerator Position Sensor (APS) #1 83 Sensor ground Camshaft position sensor (CMPS) #1 84 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] 85 Sensor ground Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] 86 Engine speed signal output Tachometer (Cluster) 87 A/C compressor relay control output A/C compressor relay 88 Cooling fan relay [High] control output Cooling fan relay 89 Cruise control indicator lamp Cruise control indicator [2.4 DOHC] 90 Cruise control indicator lamp Cruise control indicator [2.4 DOHC] 91 Canister close valve (CCV) control output Canister close valve (CCV) 92 Malfunction Indicator Lamp (MIL) control output Malfunction Indicator Lamp (Cluster) 93 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] heater control output Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] 94 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] heater control output Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Connector [C01-A] PIN DESCRIPTION Pin Description Connected to 1 Ignition coil (Cylinder #1) control output (Non-Immobilizer) Ignition coil (Cylinder #1) Ignition coil (Cylinder #4) control output (With-Immobilizer) Ignition coil (Cylinder #4) 2 Ignition coil shield ground Ignition coil (Cylinder #1,2,3,4) 3 Transaxle control output 4 Transaxle control output 5 Transaxle control output 6 - 7 - 8 - 9 Transaxle control output 10 Transaxle control output 11 Transaxle control output 12 Transaxle control output 13 - 14 Alternator signal Alternator 15 Sensor ground Cruise switch 16 Ignition coil (Cylinder #3) control output (Non-Immobilizer) Ignition coil (Cylinder #3) Ignition coil (Cylinder #2) control output (With-Immobilizer) Ignition coil (Cylinder #2) 17 Transaxle control output 18 Transaxle control output 19 Transaxle control output 20 Transaxle control output 21 - 22 - 23 - 24 Transaxle control output 25 Transaxle control output 26 Transaxle control output 27 - 28 - 29 Brake lamp switch signal input Brake switch 30 Cruise switch signal input Cruise switch 31 Ignition coil (Cylinder #4) control output (Non-Immobilizer) Ignition coil (Cylinder #4) Ignition coil (Cylinder #1) control output (With-Immobilizer) Ignition coil (Cylinder #1) 32 Transaxle control output 33 Transaxle control output 34 Transaxle control output 35 Transaxle control output 36 Transaxle control output 37 - 38 Transaxle control output 39 Transaxle control output 40 Transaxle control output 41 - 42 Blower switch input Blower switch 43 Clutch switch signal Clutch switch 44 Brake switch signal input Brake switch 45 - 46 Ignition coil (Cylinder #2) control output (Non-Immobilizer) Ignition coil (Cylinder #2) Ignition coil (Cylinder #3) control output (With-Immobilizer) Ignition coil (Cylinder #3) 47 Transaxle control output 48 Transaxle control output 49 Transaxle control output 50 Transaxle control output 51 Transaxle control output 52 Transaxle control output 53 Transaxle control output 54 Transaxle control output 55 Transaxle control output 56 - 57 A/C switch ON input A/C switch 58 Power steering switch signal input Power steering switch 59 - 60
- Input/output signal Connector [C01-K] PIN DESCRIPTION Pin Description Condition in output signal Test result Remark Type Level 1 Power ground Idle DC voltage Max. 50 mV 2 Ignition switch signal input IG OFF DC voltage Max. 0.5 V 10.2 mV IG ON Battery voltage 12.02 V 3 Power ground Idle DC voltage Max. 50 mV 2.8 mV 4 Battery voltage supply after main relay IG OFF DC voltage Max. 1.0 V 3.1 mV IG ON Battery voltage 12.1 V 5 ECU ground Idle DC voltage Max. 50 mV 1.8 mV 6 Battery voltage supply after main relay Removing the key Current Below 2.0 mA 0.38 mA Always DC voltage Battery voltage 12.7 V 7 Wheel speed sensor (WSS) [+] signal input Engine run (30KPH) SINE WAVE 15Hz: Min. 0.13Vpp 1000Hz: Min. 0.2Vpp Through: Max. 250Vpp 8 - 9 Fuel level sensor (FLS) signal input Idle Analog Max. 9.0 V 6.85 V 10 - 11 - 12 Knock sensor (KS) signal input Knocking Irregular Frequency 0.3-0.3 V Normal Normal 0 V 13 Sensor ground Idle DC voltage Max. 50 mV 30 mV 14 Sensor ground Idle DC voltage Max. 50 mV 12.4 mV 15 Camshaft position sensor (CMPS) #2 signal input Idle PULSE High: Battery voltage 5.0 V Frequency : 5.36 Hz (Idle) Low : Max. 0.5V 0.2 V 16 - 17 Crankshaft position sensor (CMPS) signal input Idle PULSE High: Battery voltage 5.00 V Frequency : 600 Hz (Idle) Low : Max. 0.5V 40 mV 18 VS-/IP- (Common Ground for VS, IP) Engine run Analog Reference for VS, IP Hi: 2.7V Lo: 2.0V 19 VS+ (Nernst Cell Voltage) Engine run Analog Normal : 450±50mV 440mV Rich : Max. Normal + 150mV 508mV Lean : Max. Normal - 150mV 356mV 20 Rc/Rp (Pump Cell Voltage) Engine run Analog Normal : 0±500mV 440mV Rich : Max. Normal -1.5mV -860mV Lean : Max. Normal +1.5V 870mV 21 - 22 - 23 Fuel consumption signal output Idle PULSE High: Battery voltage 13.7 V Frequency :3.33 Hz Low : Max. 0.5V 0 V PULSE Width : 500 μs 24 - 25 Injector (Cylinder #1) control output Idle PULSE High: Battery voltage Low : Max. 1.0V 13.8 V 200 mV 54.1 V Frequency : 5.21 Hz (Idle)/Injection time : 2.74 ms 26 Injector (Cylinder #3) control output Idle PULSE High: Battery voltage Low : Max. 1.0V 13.9 V 170 mV 53.9 V Frequency : 5.18 Hz (Idle)/Injection time : 2.73 ms 27 Injector (Cylinder #4) control output Idle PULSE High: Battery voltage 14 V 160 mV 54.3 V Frequency : 5.24 Hz (Idle)/Injection time : 2.70 ms Low : Max. 1.0V 28 Injector (Cylinder #2) control output Idle PULSE High: Battery voltage Low : Max. 1.0V 14.1 V 160 mV 53.9 V Frequency : 5.21 Hz (Idle)/Injection time : 2.73 ms 29 Wheel speed sensor (WSS) [-] signal input [with ABS] Engine run (30KPH) SINE WAVE 15Hz: Min. 0.13Vpp 1000Hz: Min. 0.2Vpp Through: Max. 250Vpp 30 Sensor power (+5V) IG OFF DC voltage Max. 0.5V 0 mV IG ON 5±0.1V 4.98 V 31 Manifold absolute pressure sensor (MAPS) signal input Idle Analog 0.8 V-1.6 V 1.37 V 32 Throttle position sensor (TPS) #2 signal input C.T Analog 4.2-5.0V 4.52 V W.O.T 3.3-3.8V 3.68 V 33 Engine coolant temperature sensor (ECTS) signal input Idle Analog 0.5V-4.5V 1.02 V 34 Sensor ground Idle DC voltage Max. 50 mV 8 mV 35 Accelerator Position Sensor (APS) #2 signal input C.T Analog 0.3-0.9V 0.4 V W.O.T 1.5-3.0V 1.9 V 36 Sensor power (+5V) IG OFF DC voltage Max. 0.5V 5 mV IG ON 5±0.1V 5.02 V 37 Sensor ground Idle DC voltage Max. 50 mV 11 mV 38 - 39 Sensor ground Idle DC voltage Max. 50 mV 11 mV 40 Vehicle speed signal input Engine run PULSE High : Min. 4.5V 5 V Frequency : 46.9 Hz (Idle) Low : Max. 0.5V 0 V Duty(-) : 50.4% (Idle) 41 - 42 Rc (Compensated Resistance Idle Analog |Rc-Rc/Rp|< ± 0.1V within -107mV 43 Sensor power (+5V) IG OFF DC voltage Max. 0.5V N.A. IG ON 5±0.1V 44 - 45 Throttle position signal output Idle PULSE High: Battery voltage 14.0 V Frequency : 100 Hz Low : 0-0.5 V 60 mV Duty(+) : 5.05% (Idle) : 8.93% (3000 RPM) 46 - 47 - 48 - 49 - 50 Variable intake solenoid valve (VIS) control output Active DC voltage Max. 1.0 V 316 mV Inactive Battery voltage 14 V 51 Battery voltage supply after main relay IG OFF DC voltage Max. 1.0 V 3.1 mV IG ON Battery voltage 12.3 V 52 Fuel tank pressure sensor (FTPS) signal input Idle DC voltage 0.4-4.6V 2.47 V 53 Intake Air temperature sensor (IATS) signal input Idle Analog 0V-5V 2.55 V 54 A/C pressure transducer (APT) signal input Idle DC voltage 0.4-4.6V A/C OFF : 1.29 V A/C ON : 2.01 V 55 - 56 - 57 Sensor ground Idle DC voltage Max. 50 mV 11 mV 58 - 59 Sensor ground Idle DC voltage Max. 50 mV 6 mV 60 Sensor power (+5V) IG OFF DC voltage Max. 0.5V 10 mV IG ON 5±0.1V 5.02 V 61 Sensor ground Idle DC voltage Max. 50 mV 30 mV 62 Camshaft position sensor (CMPS) #1 signal input Idle PULSE High: Battery voltage 5.0 V Frequency : 5.2 Hz (Idle) Low : Max. 0.5V 0.2 V 63 Sensor power (+5V) IG OFF DC voltage Max. 0.5V 0 mV IG ON 5±0.1V 4.98 V 64 Main relay control output relay OFF DC voltage Battery voltage Max. 1.0 V 12.3 V 730 mV 52.1 V relay ON 65 Cooling fan relay [Low] control output A/C ON PULSE High: Battery voltage 10.4 V Frequency : 300 Hz Low : 0~ 0.5 V 60 mV Duty(+) : 10.18% 66 CVVT Oil control valve (OCV) #1 control output Idle PULSE High: Battery voltage 15.0 V 120 mV 15.0 V Frequency : 300 Hz Low : Max. 1.0V Duty(+) : 84.7% (Idle) 67 Purge control solenoid valve (PCSV) control output Inactive Active PULSE High: Battery voltage Low : Max. 1.0V 14.3 V 80 mV 57 V Frequency : 16 Hz 68 CVVT Oil control valve (OCV) #2 control output Idle PULSE High: Battery voltage Low : Max. 1.0V 13.5 V 100 mV 13.5 V Frequency : 300 Hz 69 Immobilizer lamp control output lamp OFF DC voltage High: Battery voltage 13.2 V lamp ON Low : Max. 2.0V 40 mV 70 Fuel pump relay control output relay OFF DC voltage Battery voltage 12.8 V 40 mV 47.3 V 680 Ohm Resistance : 680 Ohm relay ON Max. 1.0V 71 ETC motor [A] control output Idle PULSE High: Battery voltage 13.4 V Low : Max. 1.0V 0 V 72 ETC motor [B] control output Idle PULSE High: Battery voltage 13.3 V Low : Max. 1.0V 0 V 73 Sensor ground Idle DC voltage Max. 50 mV 5 mV 74 Sensor ground Idle DC voltage Max. 50 mV 7 mV 75 Immobilizer communication line After IG.ON PULSE High : Min. 8.5V 11.8 V Communication Low : Max. 3.5V 1.0 V 76 - 77 CAN [High] RECESSIVE PULSE 2.0-3.0 V 2.58 V Communication speed : 500kbps DOMINANT 2.75~4.5 V 3.54 V 78 CAN [Low] RECESSIVE PULSE 2.0-3.0 V 2.64 V Communication speed : 500kbps DOMINANT 0.5~2.25 V 1.52 V 79 - 80 Throttle position sensor (TPS) #1 signal input C.T Analog 0.3-0.9V 0.65 V W.O.T 1.5-3.0V 1.63 V 81 - 82 Accelerator Position Sensor (APS) #1 signal input C.T Analog 0.3-0.9V 0.8 V W.O.T 1.5-3.0V 4 V 83 Sensor ground Idle DC voltage Max. 50 mV 12 mV 84 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input Idle DC voltage Rich : 0.6-1.0V 740 mV Lean : Max. 0.4V 70 mV 85 Sensor ground Idle DC voltage Max. 50 mV 10 mV 86 Engine speed signal output Idle PULSE High: Battery voltage 14.0 V Duty(+) : 50% (Idle) Low : Max. 0.5V 60 mV Idle = 20~26Hz (Reference) 21 Hz 87 A/C compressor relay control output A/C OFF DC voltage Battery voltage 14.3 V Resistance : 680 Ohm A/C ON Max. 1.0V 102 mV 88 Cooling fan relay [High] control output Relay OFF DC voltage Battery voltage 13.9 V Relay ON Max. 1.0V 175 mV 89 Cruise control indicator lamp 90 Cruise control indicator lamp 91 Canister close valve (CCV) control output Inactive PULSE High: Battery voltage 13 V 20 mV 57.7 V Vpeak : Max. 70V Active Low : Max. 1.0V 92 Malfunction Indicator Lamp (MIL) control output lamp OFF DC voltage Battery voltage 13.8 V lamp ON Max. 1.0V 54 mV 93 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] heater control output Engine run PULSE High: Battery voltage 14.4 V Frequency : 10 Hz Low : Max. 1.0V 0.36 V Duty(+) : 58.3% 94 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] heater control output Engine run PULSE High: Battery voltage 14V Frequency : 7.68Hz Low : Max. 1.0V 0.31V Duty(+) : 53.9% Connector [C01-A] PIN DESCRIPTION Pin Description Condition In/Output signal Test result Remark Type Level 1 Ignition coil (Cylinder #1) control output (Non-Immobilizer) Idle PULSE 1st voltage : 300~400V 416 V Frequency : 5.2 Hz (Idle) Injection time : 2.78 ms Ignition coil (Cylinder #4) control output (With-Immobilizer) ON voltage : Max. 2V 1.4 V 2 Ignition coil shield ground Idle DC voltage Max. 50 mV 16.8 mV 3 Transaxle control output 4 Transaxle control output 5 Transaxle control output 6 - 7 - 8 - 9 Transaxle control output 10 Transaxle control output 11 Transaxle control output 12 Transaxle control output 13 - 14 Alternator signal Idle PULSE High: Battery voltage 13.4 V Low : Max 1.5 V 40 mV 15 Sensor ground Idle DC voltage Max. 50 mV 16 Ignition coil (Cylinder #3) control output (Non-Immobilizer) Idle PULSE 1st voltage : 300~400V 416 V Frequency : 5.2 Hz (Idle) Ignition coil (Cylinder #2) control output (With-Immobilizer) ON voltage : Max. 2V 1.3 V Injection time : 2.73 ms 17 Transaxle control output 18 Transaxle control output 19 Transaxle control output 20 Transaxle control output 21 - 22 - 23 - 24 Transaxle control output 25 Transaxle control output 26 Transaxle control output 27 - 28 - 29 Brake lamp switch signal input Brake ON DC voltage Battery voltage Brake OFF Max. 0.5 V 30 Cruise switch signal input 31 Ignition coil (Cylinder #4) control output (Non-Immobilizer) Idle PULSE 1st voltage : 300~400V 408 V Frequency : 5.2 Hz (Idle) Injection time : 2.74 ms Ignition coil (Cylinder #1) control output (With-Immobilizer) ON voltage : Max. 2V 1.6 V 32 Transaxle control output 33 Transaxle control output 34 Transaxle control output 35 Transaxle control output 36 Transaxle control output 37 - 38 Transaxle control output 39 Transaxle control output 40 Transaxle control output 41 - 42 Blower switch input A/C OFF DC voltage Max. 0.5V 20 mV A/C ON Battery voltage 11.8 V 43 Clutch switch signal RELEASE DC voltage Max. 0.5V PUSH Battery voltage 44 Brake switch signal input PUSH DC voltage Max. 0.5 V Normal Battery voltage 45 - 46 Ignition coil (Cylinder #2) control output (Non-Immobilizer) Idle PULSE 1st voltage : 300~400V 410 V Frequency : 5.2 Hz (Idle) Ignition coil (Cylinder #3) control output (With-Immobilizer) ON voltage : Max. 2V 1.5 V Injection time : 2.78 ms 47 Transaxle control output 48 Transaxle control output 49 Transaxle control output 50 Transaxle control output 51 Transaxle control output 52 Transaxle control output 53 Transaxle control output 54 Transaxle control output 55 Transaxle control output 56 - 57 A/C switch ON input A/C OFF DC voltage Max. 0.5V 0 V A/C ON Battery voltage 14 V 58 Power steering switch signal input S/W ON DC voltage Max. 0.5V 0 V S/W OFF Battery voltage 14 V 59 - 60
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VIN Programming Procedure
VIN (Vehicle Identification Number) is a number that has the vehicle's information (Maker, Vehicle Type, Vehicle Line/Series, Body Type, Engine Type, Transmission Type, Model Year, Plant Location and so forth. When replacing an PCM, the VIN must be programmed in the PCM. If there is no VIN in PCM memory, the fault code (DTC P0630) is set.
| CAUTION | The programmed VIN cannot be changed. When writing the VIN, confirm the VIN carefully |
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- Select "Vehicle" and "Engine" (For example, SEDONA 3.5L V6).
- Select "VIN WRITING".
- Check the PCM status. NOTE: VIRGIN: VIN is not programmed LEARNT: VIN has been already programmed Is the PCM status "VIRGIN"? YES: Go to next step 4. NO: END
- Write the VIN with cursor, function and number keys. WARNING: Before pressing the "ENTER" key, confirm the VIN again because the programmed VIN cannot be changed.
- After verifying the written VIN, press the "ENTER" key.
- Turn the ignition switch OFF, then back ON.
- Verify the programmed VIN in the PCM memory.
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- Turn ignition switch off.
- Disconnect the battery (-) cable from the battery.
- Remove the PCM cover and disconnect the PCM connector(s) (A).
- Unscrew the PCM mounting bolts (B) and remove the PCM (C) from the air cleaner assembly.
- Install a new PCM. PCM mounting bolts: 9.8-11.8 N.m (1.0-1.2 kgf.m, 7.2-8.7 lb-ft)
Throttle position sensor (TPS)
- Connect a scan tool on the Data Link Connector (DLC).
- Start engine and check output voltages of TPS 1 and 2 at C.T and W.O.T. Specification: Refer to «SPECIFICATION»(ref-357441-S37165625182010032300000) .
- Turn ignition switch OFF and disconnect the scan tool from the DLC.
- Disconnect ETC module connector and measure resistance between ETC module terminals 1 and 2. Specification: Refer to «SPECIFICATION»(ref-357441-S37165625182010032300000) .
ETC motor
- Disconnect ETC module connector and measure resistance between ETC module terminals 3 and 6. Specification: Refer to «SPECIFICATION»(ref-357441-S37165625182010032300000) .
ETC system initialization
When ignition switch is turned from OFF to ON, ETC system learns the throttle angle in 1 sec.
- Throttle valve moves from limp-home position to close position.
- And then, it opens to about 15° and moves to limp-home position.
Scheme 78
Manifold Absolute Pressure Sensor (MAPS) is speed-density type sensor and is installed on the surge tank. This MAPS senses absolute pressure in surge tank and transfers this analog signal proportional to the pressure to the PCM. The PCM calculates the intake air quantity and engine speed based on this signal. This MAPS consists of piezo-electric element and hybrid IC that amplifies the element output signal. The element is silicon diaphragm type and adapts pressure sensitive variable resistor effect of semiconductor. 100% vacuum and the manifold pressure applies to both sides of it respectively. The sensor outputs the silicon variation proportional to pressure change by voltage.