hyundai sonata ignition diagram
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Filed Under (Hyundai) by admin on 25-04-2010
1. At the crank position sensor, check for battery voltage to be present on the Red wire with the key on and cranking. The Black wire should be a good ground and the Blue wire should have 5 volts on it from the computer. One may have to disconnect the crank sensor to check for the 5 volt reference. 2. During crank look for a good 5 volt square wave signal on the Blue wire. 3. Check at the ignition coils for good battery voltage key on and cranking. If there is a loss of voltage during crank check the ignition failsafe relay. 4. Check for any stored engine codes. Crankshaft Position (CKP) Sensor Ignition Failsafe Sensor The ignition failsafe sensor supplies battery voltage to the ignition coils. The ignition coils can look like they have good battery voltage key on but during crank the ignition failsafe relay can stop sending voltage to the ignition coils.
Filed Under (Honda) by admin on 03-01-2011
Spark Check for spark at secondary coil wire and each spark plug wire using a spark tester. If spark is not present, continue with following tests. Check spark plug wire resistance on suspect wires. Resistance should be less than 25,000 ohms. Ignition Coil Power Source 1. On Civic, remove distributor cap to check power source directly at coil. On all models, disconnect ignition coil primary leads. Turn ignition on. Using voltmeter, check voltage between ground and Black/Yellow wire terminal of ignition coil harness. 2. Battery voltage should be present. If battery voltage is not present, check for open in Black/Yellow wire between coil and ignition switch. Ignitor Power Source Turn ignition off. Disconnect harness connector at distributor. Turn ignition on. Using voltmeter, check for battery voltage between ground and Black/Yellow wire of harness. If voltage is not present, check for open in Black/Yellow wire between ignition coil and harness connector. If wire is okay, check ignition coil resistance (for internal short to ground). Ignitor Check Check TDC/CRANK/CYL sensor resistance values. See TACH PULSE SIGNAL . Check power sources. If no problems are found and spark is not present, replace ignitor. Ignition Coil Resistance (Accord & Prelude) 1. Remove primary and secondary leads from ignition coil. Using an ohmmeter, check resistance between primary terminals “A” and “C” (“A” and “B” for Prelude) of ignition coil. See Fig. 2 . Resistance should be .6-.8 ohm at room temperature. 2. On Accord, check resistance between terminals “B” and “D” of ignition coil (tachometer circuit). Resistance should be about 2090-2310 ohms at room temperature. 3. On all models, check secondary resistance between terminal “A” and secondary output terminal (coil tower). See IGNITION COIL RESISTANCE table. Check for continuity between terminals “A” and “B” (“A” and “C” for Prelude). Continuity should exist. If readings are not within specification, replace coil.
Filed Under (Honda) by admin on 23-04-2010
Ignition Coil Test (Accord 2.3L & CR-V) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Remove primary leads from ignition coil. Using an ohmmeter, check primary resistance between ignition coil terminals “A+” and “B-”. See Fig. 12 . Resistance should be as specified. See IGNITION COIL RESISTANCE table. 2. Check secondary resistance between ignition coil terminal “A+” and secondary output terminal (ignition coil tower). See IGNITION COIL RESISTANCE table. If readings are not as specified, replace ignition coil.Ignition Control Module (ICM) Input Test (Accord 2.3L) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Fig. 14 or Fig. 15 . Turn ignition on. Check for voltage between body ground and ICM Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Black/Yellow wire between ignition switch and ICM. See WIRING DIAGRAMS article.
Filed Under (Hyundai) by admin on 06-04-2010
TIMING BELT Removal
1. Remove all drive belts and drive pulleys from crankshaft and water pump. Remove generator bolt, if necessary. Remove crankshaft pulley and water pump pulley. 2. Remove timing belt covers and gaskets, noting bolt lengths and locations. DO NOT rotate engine counterclockwise, as viewed from timing belt side of engine. Remove timing belt tensioner pulley. 3. Rotate engine clockwise to align all timing marks so No. 1 cylinder is at TDC of compression stroke. See Fig. 1 . If reusing belt, place mark on timing belt to indicate direction of belt rotation. Remove belt. CAUTION: This application is an interference engine. Do not rotate camshaft or crankshaft when timing belt is removed, or engine damage may occur. NOTE: On some models, engine is equipped with a timing belt and timing chain. Inspect timing chain when replacing timing belt.
Filed Under (Hyundai) by admin on 07-06-2010
Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve, ECM Injector 2 or 3 – circuit malfunction Wiring, injector Mass air flow (MAF) sensor – circuit malfunction Wiring, MAF sensor, ECM Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve, ECM Wiring, HO2S, mechanical fault, fuel system, fuel Heated oxygen sensor (HO2S) – malfunction pressure, ECM AC cooling fan – circuit malfunction Wiring, AC cooling fan Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve, ECM Engine coolant temperature (ECT) sensor – circuit malfunction Wiring, ECT sensor, ECM Intake air temperature (IAT) sensor – circuit malfunction Wiring, IAT sensor, ECM