ON BOARD DIAGNOSTICS
The ECM is equipped with a self-diagnostic system, which detects system failures or abnormalities. When a malfunction that may affect vehicle emissions is detected during 2 sequential drive cycles, the ECM will illuminate the Malfunction Indicator Light (MIL) on the instrument panel. See MALFUNCTION INDICATOR LIGHT . A corresponding DTC will be stored in ECM memory. If a misfire is detected, MIL will illuminate and DTC will be stored in ECM immediately after fault is detected. If misfire is severe enough to cause catalytic converter damage, MIL will blink until danger to catalytic converter has passed.
MIL will turn off if the fault that turned it on is not detected for 3 sequential drive cycles, but DTC will remain in ECM memory. If fault that set DTC is not detected for 40 drive cycles, DTC will be erased from ECM memory. If battery or ECM is disconnected, all DTCs and freeze frame data will be erased from ECM. As a bulb check, MIL will also illuminate for about 5 seconds when ignition is turned on.
DTCs will be recorded at various operating times and conditions. Some DTCs require operation of sensor or switch for 5 seconds, while other components require operation for 5 minutes or longer at normal operating temperature, vehicle speed, and load. Therefore, when verifying repair, some DTCs may not set in a service bay and may require road test to duplicate the conditions under which the DTC will set.
TESTING PROCEDURE
Note. Before performing testing procedures, check for any related Technical Service Bulletin (TSB).
Diagnosis of computerized engine control system should be performed in the following order
- Perform visual inspection. Most driveability problems in the engine control system result from faulty wiring, poor electrical connections or leaking air and vacuum hose connections. To avoid unnecessary component testing, perform a visual inspection before beginning self-diagnostic tests.
- Ensure all mechanical engine systems other than computerized systems (i.e., compression, ignition, etc.) are operating properly. DO NOT proceed with testing unless all other problems have been repaired. If MIL is on, see «RETRIEVING DIAGNOSTIC TROUBLE CODES»(ref-152018-S15394475812003011300000) . After retrieving DTCs, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-152018-S17472142292003011300000) .
- After repairs have been completed, see «AFTER-REPAIR PROCEDURE»(ref-152018-S11141431482003011300000) .
RETRIEVING DIAGNOSTIC TROUBLE CODES
Note. Self-diagnostic procedures requiring use of a scan tool are written specifically for Hyundai's Hi-Scan Pro Tool . Other scan tools may not be capable of performing all necessary functions. For specific scan tool operating procedures, see the scan tool manufacturer's instruction manual.
- Before entering on-board diagnostics, see «SERVICE PRECAUTIONS»(ref-152018-S22408154632003011300000). Turn ignition off. Locate DLC under left side of instrument panel. (Scheme 21) Connect scan tool to DLC connector.
- Start engine and retrieve DTCs. Read and record scan tool self-diagnostic output (stored DTCs). After retrieving DTCs, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-152018-S17472142292003011300000).
Scheme 21
CLEARING DIAGNOSTIC TROUBLE CODES
| CAUTION | When battery is disconnected, vehicle computer and memory system may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
| CAUTION | Record DTCs and freeze frame data before erasing DTCs, or freeze frame data will be lost. |
DTCs may be cleared by using Hi-Scan Pro tool or equivalent scan tool, or by disconnecting negative battery cable. Clearing DTCs will also clear freeze frame data. Turn ignition off. Disconnect negative battery cable for at least 20 seconds. Reconnect negative battery cable. Verify DTCs have been erased.
INTERMITTENT DIAGNOSTIC TROUBLE CODES
If DTC was set and DTC diagnostic procedure does not locate fault, problem is intermittent. Most intermittent malfunctions occur from vibration, temperature change, moisture change and poor connections. Try to determine under what specific conditions problem occurs. Try to duplicate those conditions while monitoring circuit suspected of being faulty with data recorder function of scan tool. The following additional checks may assist in identifying a possible intermittent problem
- Check for any pertinent Technical Service Bulletin (TSB).
- Visually inspect related wiring connectors for broken, bent, pushed out, or corroded terminals.
- Visually inspect related wiring for chafed, pierced, or partially broken wires.
- Wiggle suspected wire(s) or vibrate suspected component.
- Apply heat and/or humidity to suspected component.
Scheme 22
Scheme 23
Scheme 24
Scheme 25
Scheme 26
Scheme 27
Scheme 28
Scheme 29
Scheme 30
Scheme 31
Scheme 32
Scheme 33
Scheme 34
Scheme 35
DIAGNOSTIC TROUBLE CODE DEFINITIONS
Note. Front Heated Oxygen Sensor (HO2S) may also be referred to as Bank 1/Sensor 1 (1/1) HO2S or O2 Sensor (Up). Rear HO2S may also be referred to as Bank 1/Sensor 2 (1/2) HO2S or O2 sensor (Down).
See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table, then go to appropriate diagnostic procedure under DIAGNOSTIC TESTS .
| DTC | Description |
|---|---|
| P0030 (1) | O2 Sensor Heater - Heater Control Circuit (Bank 1/Sensor 1) |
| P0031 (1) | O2 Sensor Heater Circuit Low (Bank 1/Sensor 1) |
| P0032 (1) | O2 Sensor Heater Circuit High (Bank 1/Sensor 1) |
| P0036 (1) | O2 Sensor Heater - Heater Control Circuit (Bank 1/Sensor 2) |
| P0037 (1) | O2 Sensor Heater Circuit Low (Bank 1/Sensor 2) |
| P0038 (1) | O2 Sensor Heater Circuit High (Bank 1/Sensor 2) |
| P0106 | MAP Sensor Rationality |
| P0107 | MAP Sensor Range Check Low |
| P0108 | MAP Sensor Range Check High |
| P0111 | Intake Air Temperature Circuit Range/Performance |
| P0112 | Intake Air Temperature Circuit Low Input |
| P0113 | Intake Air Temperature Circuit High Input |
| P0116 | Engine Coolant Temperature Sensor Circuit Range/Performance |
| P0117 | Engine Coolant Temperature Sensor Circuit Low Input |
| P0118 | Engine Coolant Temperature Sensor Circuit High Input |
| P0121 | Throttle Position Sensor Circuit Range/Performance |
| P0122 | Throttle Position Sensor Circuit Low Input |
| P0123 | Throttle Position Sensor Circuit High Input |
| P0128 (1) | Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) |
| P0130 | O2 Sensor Circuit Malfunction (Bank 1/Sensor 1) |
| P0131 | O2 Sensor Circuit Low Input (Bank 1/Sensor 1) |
| P0132 | O2 Sensor Circuit High Input (Bank 1/Sensor 1) |
| P0133 | O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) |
| P0134 | O2 Sensor Circuit No Activity Detected (Bank 1/Sensor 1) |
| P0136 | O2 Sensor Circuit Malfunction (Bank 1/Sensor 2) |
| P0137 | O2 Sensor Circuit Low Input (Bank 1/Sensor 2) |
| P0138 | O2 Sensor Circuit High Input (Bank1/Sensor 2) |
| P0140 | O2 Sensor Range Circuit No Activity Detected (Bank 1/Sensor 2) |
| P0171 | Fuel Trim Malfunction - System Too Lean (Bank 1) |
| P0172 | Fuel Trim Malfunction - System Too Rich (Bank 1) |
| P0230 (1) | Fuel Pump Circuit Malfunction |
| P0261 | Cylinder 1 - Injector Circuit Low |
| P0262 | Cylinder 1 - Injector Circuit High |
| P0264 | Cylinder 2 - Injector Circuit Low |
| P0265 | Cylinder 2 - Injector Circuit High |
| P0267 | Cylinder 3 - Injector Circuit Low |
| P0268 | Cylinder 3 - Injector Circuit High |
| P0270 | Cylinder 4 - Injector Circuit Low |
| P0271 | Cylinder 4 - Injector Circuit High |
| P0300 (2) | Multiple Cylinder Misfire Detected |
| P0301 (2) | Cylinder 1 - Misfire Detected |
| P0302 (2) | Cylinder 2 - Misfire Detected |
| P0303 (2) | Cylinder 3 - Misfire Detected |
| P0304 (2) | Cylinder 4 - Misfire Detected |
| P0325 (3) | Knock Sensor Circuit Malfunction |
| P0335 | Crankshaft Position Sensor Circuit Malfunction |
| P0336 | Crankshaft Position Sensor Range/Performance |
| P0340 | Camshaft Position Sensor Circuit Malfunction (Bank 1 Or Single Sensor) |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) |
| P0444 | Evaporative Emission Control System - Purge Control Valve Circuit Open |
| P0445 | Evaporative Emission Control System - Purge Control Valve Circuit Shorted |
| P0461 (1) | Fuel Level Sensor Circuit Range/Performance |
| P0462 (1) | Fuel Level Sensor Circuit Low Input |
| P0463 (1) | Fuel Level Sensor Circuit High Input |
| P0501 (1) | Vehicle Speed Sensor Range/Performance |
| P0506 | Idle Control System - RPM Lower Than Expected |
| P0507 | Idle Control System - RPM Higher Than Expected |
| P0562 (1) | System Voltage Low |
| P0563 (1) | System Voltage High |
| P0605 (1) | Internal Control Module Read Only Memory Error |
| P0650 | Malfunction Indicator Light Control Circuit Malfunction |
| P1307 | Acceleration Sensor - Rationality |
| P1308 | Acceleration Sensor - Signal Check Low |
| P1309 | Acceleration Sensor - Signal Check High |
| P1401 (1) | Diagnostic Module Tank Leakage Malfunction |
| P1402 (1) | Power Stage (Diagnostic Module Tank Leakage Motor) |
| P1403 (1) | Power Stage (Diagnostic Module Tank Leakage Valve) |
| P1404 (1) | Diagnostic Module Tank Leakage Heater |
| P1505 | Idle Charge Actuator Signal Low Of Coil No. 1 |
| P1506 | Idle Charge Actuator Signal High Of Coil No. 1 |
| P1507 | Idle Charge Actuator Signal Low Of Coil No. 2 |
| P1508 | Idle Charge Actuator Signal High Of Coil No. 2 |
| P1586 (1) (3) | AT/MT Encoding Error |
| P1690 (1) (3) | Smart Remote Arming Error (Immobilizer) |
| P1691 (1) (3) | Antenna Error (Immobilizer) |
| P1693 (1) (3) | Transponder Error (Immobilizer) |
| P1694 (1) (3) | ECU Error (Immobilizer) |
| P1695 (1) (3) | EEPROM Error (Immobilizer) |
| (1) Testing information is not available from manufacturer. (2) MIL will continuously blink when misfire is severe enough to cause catalytic converter damage. (3) Malfunction will set DTC, but not illuminate MIL. | |
| (1) | Testing information is not available from manufacturer. |
| (2) | MIL will continuously blink when misfire is severe enough to cause catalytic converter damage. |
| (3) | Malfunction will set DTC, but not illuminate MIL. |
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
Failure Conditions (DTC P0106, P0107 & P0108)
The MAP sensor outputs voltage which corresponds to pressure in the surge tank. The ECM checks whether this voltage is within specified range. ECM will set DTC and MIL will illuminate if MAP sensor output voltage has continued to be 4.5 volts or higher, corresponding to a surge tank pressure of 17 psi (114 kPa) or higher for 4 seconds, or to be 1.95 volts or lower, corresponding to a surge tank pressure of 7.4 psi (50 kPa) or lower for 4 seconds.
Test Procedure
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 36) For test procedure (Scheme 37)& (Scheme 38).
Scheme 36
Scheme 37
Scheme 38
Failure Conditions (DTC P0111, P0112 & P0113)
ECM will set DTC and MIL will illuminate if IAT sensor indicates a temperature lower than -49°F (-45°C) for 0.2 second during 2 driving cycles. This check is made after engine has run for 4 minutes and 10 seconds and then idles for 30 seconds (with no fuel cut-off during a coast-down). This DTC indicates a lower than expected temperature is being read by IAT sensor or ECM after engine has been warmed up.
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 36) For test procedure (Scheme 39)& (Scheme 40).
Scheme 39
Scheme 40
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
Note. The ECT sensor resistance varies with temperature as follows: 5900 ohms @ 32°F (0° C). 2500 ohms @ 68°F (20°C). 300 ohms @ 176°F (80°C).
For circuit diagram (Scheme 41) For test procedure (Scheme 42)- (Scheme 45).
Scheme 41
Scheme 42
Scheme 43
Scheme 44
Scheme 45
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
Note. The standard resistance value between TP sensor terminals No. 1 and 3 is 1600-2500 ohms.
For circuit diagram (Scheme 46) For test procedure (Scheme 47)- (Scheme 49).
Scheme 46
Scheme 47
Scheme 48
Scheme 49
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 50) For test procedure (Scheme 51)- (Scheme 53).
Scheme 50
Scheme 51
Scheme 52
Scheme 53
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 50) For test procedure (Scheme 54)- (Scheme 56).
Scheme 54
Scheme 55
Scheme 56
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 50) For test procedure (Scheme 57)and (Scheme 58).
Scheme 57
Scheme 58
Test Procedures
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 50) For test procedure (Scheme 59)- (Scheme 61).
Scheme 59
Scheme 60
Scheme 61
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For test procedure (Scheme 62)and (Scheme 63).
Scheme 62
Scheme 63
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 64) For test procedure (Scheme 65)and (Scheme 66).
Scheme 64
Scheme 65
Scheme 66
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 67) For test procedure (Scheme 68)and (Scheme 69).
Scheme 67
Scheme 68
Scheme 69
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 67) For test procedure (Scheme 70)
Scheme 70
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 71) For test procedure (Scheme 72)and (Scheme 73).
Scheme 71
Scheme 72
Scheme 73
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 74) For test procedure (Scheme 75)
Scheme 74
Scheme 75
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 76) For test procedure (Scheme 77)and (Scheme 78).
Scheme 76
Scheme 77
Scheme 78
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For test procedure (Scheme 79)
Scheme 79
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 80) For test procedure (Scheme 81)
Scheme 80
Scheme 81
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 82) For test procedure (Scheme 83)and (Scheme 84).
Scheme 82
Scheme 83
Scheme 84
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 85) For test procedure (Scheme 86)and (Scheme 87).
Scheme 85
Scheme 86
Scheme 87
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 82) For test procedure (Scheme 88)
Scheme 88
Note. To identify circuits and circuit wire color, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
Note. After any repair has been made. See AFTER-REPAIR PROCEDURE under SELF DIAGNOSTIC SYSTEM. For component removal and installation, see REMOVAL, OVERHAUL & INSTALLATION article.
For circuit diagram (Scheme 82) For test procedure (Scheme 89)
