4g93 Ignition Wires
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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.
Filed Under (Pontiac) by admin on 18-09-2010
1. 2. 3. 4. 5. Disconnect all the electrical connectors at the ignition control module. Note position of spark plug wires for installation and disconnect the spark plug wires from ignition coils. Remove the screws securing coil assemblies to ignition control module. Disconnect the coils from ignition control module. Remove the ignition control module from the bracket. INSTALLATION PROCEDURE 1. Install the ignition control module on the bracket. 2. Install the coils to ignition control module. NOTE: Refer to Fastener Notice in Service Precautions. 3. Reinstall the screws. Tighten Tighten the screws to 4.5 N.m (40 lb in). 4. Connect the spark plug wires as noted during removal. 5. Connect the electrical connectors to the ignition control module.
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 (Ford) by admin on 05-11-2010
IGNITION KEY DIFFICULT OR UNABLE TO BE TURNED OR REMOVED – KEY-IN-IGNITION WARNING CHIME SOUNDING WITH KEY REMOVED Some 2000-2005 Focus vehicles may exhibit ignition key related issues including difficulty or an inability to turn the key, an inability to remove the key, or (2005 only) the key-in-ignition warning chime continuing to sound even when the key is removed. ACTION Based on the vehicle’s symptom, refer to the appropriate Service Procedure. SERVICE PROCEDURE UNABLE TO REMOVE IGNITION KEY 1. Check if the inability to remove the key is the result of normal operation of the key removal inhibit circuit: In automatic transmission equipped vehicles, the key removal inhibit solenoid (within the ignition switch assembly) is energized when the gear selector is moved out of the park position, and prevents the ignition key from being removed. If the gear selector is in any position other than park when the key is rotated or turned off, the key removal inhibit circuit will not release the key (key cannot be removed). To remove the key, the gear selector must first be placed in the park position, then the ignition must be cycled to run and back to lock. This is normal, do not replace the ignition lock cylinder if it is operating as described. 2. Refer to Workshop Manual, Section 307-05 and follow diagnostics for the “shift interlock system”. The shift interlock system includes the key removal inhibit circuit, which may be causing the concern. If the shift interlock system is operating correctly, replace the ignition lock cylinder. Refer to Workshop Manual, Section 501-14, “Ignition Lock Cylinder Functional” removal and installation procedure. DIFFICULT OR UNABLE TO TURN IGNITION KEY
Filed Under (Ford) by admin on 19-06-2010
1. Insert the first programmed ignition key into the ignition and turn the ignition from OFF to ON (maintain the ignition in ON for 1 second). 2. Turn the ignition to OFF and remove the first key from the ignition lock cylinder. 3. Within 10 seconds of turning the ignition to OFF, insert the second programmed ignition key into the ignition and turn the ignition from OFF to ON (maintain the ignition in ON for 1 second). 4. Turn the ignition to OFF and remove the second key from the ignition lock cylinder. 5. Within 20 seconds of turning the ignition to OFF, insert the unprogrammed ignition key (new key) into the ignition and turn the ignition from OFF to START (attempt to start the vehicle). 6. If it is desired to program additional keys, repeat the key programming procedure from the beginning.