astra h coil pack testing
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Filed Under (Mercury) by admin on 20-09-2010
REMOVAL 1. Remove the wet cowl. 2. Disconnect the spark plug wires from the ignition coil. CAUTION: When removing the spark plug wires a slight twisting motion will break the seal and ease removal. 3. Disconnect the ignition coil electrical connector. 4. Remove the mounting screws and remove the ignition coil. INSTALLATION 1. To install, reverse the removal procedure.
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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.
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Filed Under (Subaru) by admin on 06-10-2010
rePaIr Procedure/InformatIon Step 1) Ignition Coil Inspection Check the tower portion of the ignition coil for carbon tracks (leakage). If leakage is more than 5mm long, the ignition coil and high tension cables should be replaced (see Figure 1). Figure 1 Example of leakage on ignition coil tower. Step 2) High Tension Cable Inspection Check the high tension cables for carbon tracks (leakage). If leakage is evident, the high ten- sion cables should be replaced and the ignition coil cleaned (see figure 2 and refer to Step 3). Figure 2 Leakage on cable. Step 3) Ignition Coil Cleaning Procedure (if carbon track is less than 5mm) • • • • note: Do not insert the high tension cables until the ignition coil is dry. If there is any evidence of carbon, clean the surface of the ignition coil using a clean, soft rag dampened with water. Permit the ignition coil to dry. Clean the same area of the ignition coil using a clean soft rag dampened with Isopropyl alcohol. Permit the ignition coil to dry.
Filed Under (Jeep) by admin on 13-12-2010
SECONDARY CIRCUIT CHECK CAUTION: When checking secondary voltage, do not remove spark plug wires from spark plugs No. 3 on 4-cylinder, No. 1 or 5 on 6-cylinder and No. 3 or 4 on V8 Engines. 1. Disconnect coil wire from distributor cap. Use insulated pliers to hold wire approximately 1/2″ from engine block or intake manifold. 2. Crank engine and check for spark at gap. If no spark occurs, turn off ignition switch, and check resistance of secondary coil windings. See Ignition Coil Resistance Check, Secondary Resistance. Replace ignition coil if outside specifications. 3. If spark occurred in step 2), connect coil wire to distributor cap. Remove wire from 1 spark plug. Using insulated pliers, hold wire 1/2″ from engine head while cranking engine. Check for spark. 4. If spark occurs, check for fuel problems or incorrect timing. If no sparks occur, check for defective rotor or distributor cap or for defective spark plug wires. CURRENT FLOW CHECK 1. Remove connector from ignition coil. Remove positive wire from connector, then negative wire. Connect ammeter between positive terminal of coil and disconnected positive wire. Connect jumper wire from negative terminal to good ground. 2. Turn ignition switch “ON”. Current flow should be approximately 7 amps., but should not exceed 7.6 amps. If more than 7.6 amps., replace ignition coil. 3. With ammeter still connected to coil positive terminal, remove jumper wire from negative terminal. Connect coil Green wire to negative terminal. Current flow should be approximately 4 amps. 4. If less than 3.5 amps., check for poor connections in 4-wire and 3-wire connectors or for poor ground at distributor ground screw. 5. If current flow is greater than 5 amps., the control unit is defective and must be replaced. Start engine. Normal current flow with engine running is 2.0-2.4 amps. If outside of specifications, replace control
Filed Under (Nissan) by admin on 16-01-2011
If an applied vehicle exhibits one or more of the following symptoms: • • • MIL “ON” with DTC P0340 (Camshaft Position Sensor) stored in Self Diagnosis results, Engine stumbles momentarily during cruise condition, Engine stops running at idle, The cause of this incident may be the ignition coils. A new resistor assembly (located inside the ignition coil tube) is available to repair the described symptoms, if they should occur. SERVICE PROCEDURE 1. Verify that the vehicle has one or more of the symptoms listed above in the Service Information. 2. Remove all four ignition coils. Refer to the appropriate 2002 Service Manual for removal procedure of the ignition coils (page EM-26 for Altima, page EM-106 for Sentra). 3. Install the new resistor assembly in all four ignition coil tubes as follows: A. Pull the rubber boot away from the ignition coil. Then, twist and pull the ignition coil tube from the ignition coil to separate them (see Figure 1). Rubber boot Tube Ignition coil Figure 1 TP010651 B. Remove the spring from the ignition coil tube and discard. Insert the new resistor assembly into the ignition coil tube exactly as shown in Figure 2 below. C. Assemble the ignition coil tube to the ignition coil. • Rotate the tube while pressing onto the coil. • A “pop” sound will be heard when the rubber boot is seated correctly to the ignition coil. • Ensure there are no gaps and bulges between the coil body and the rubber boot (see Figure 3).
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