Question about 1994 Toyota Camry
Between coil posts(coil unconnected) = .56 ohms.
Secondary coil resistance: 3.4 Kohms
Between G+ and G- 238 ohms
Between NE+ and NE 479 ohms
+12 vdc on both coil posts
Between TE1 and TE2: 7.4 VDC
Between TE2 and E1: 5 VDC
Condition: Engine died suddenly without previous symptoms.
1992 Camry with 90K miles.
Before I begin to purchase things, Is there anything else I should check. If not, is there any clue as to what it should be?
The igniter or the ECM I am sure, I just wanted to do a sanity check.
Thanks a ton,
You should also check the crank position sensor this is what tells the ecm when to spark. this is a prox switch and when unplugged and checking ohms while cranking you should see a sqaure wave. should go from 0 ohms to infinity. when these go out you will not get any spark on any cylinder
Posted on May 19, 2009
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Posted on Jan 02, 2017
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Nov 17, 2016 | 1997 Buick LeSabre
Are the plugs installed because without compression you will not get ignition/spark.
Are there any codes set???
Is the ignition fuse okay??? Is ECM fuse okay?
Of course first you need power to the coil which should be there whenever the ignition and run switches are on if so see below:
Are the plugs installed
Remove the coil. THEN set your ohmmeter scale to RX1 and place ohmmeter leads on the primary coil windings A (front of coil) to B (middle of coil), B to C (front of coil) and check for primary coil winding resistance which normal resistance range is 0.5-0.7 ohms. If primary resistance is not within this range check out test results below.
Ignition Coil Secondary Circuit Test
With the ignition coil removed from the motorcycle and the ohmmeter set to the RX1K scale place the ohmmeter leads on the secondary coil windings B (middle terminal) to
R (rear secondary terminal/socket), B to F (front secondary terminal/socket) and check for secondary coil winding resistance which normal resistance range will be 5.5-7.5K ohms. If secondary resistance is not within this range check out test results below.
A low resistance value indicates a short in the coil winding which requires coil replacement.
A high resistance value might indicate that there is some corrosion/oxidation of the coil terminals requiring the coil terminals to be cleaned and the resistance test then repeated and if after the test is repeated the resistance is still high after the terminals were cleaned the coil must be replaced.
If there is an infinite ohms or no continuity) resistance value the coil is open and must be replaced.
If you have spark, it sounds like either the sensor in the timing cavity of the engine is bad or the electronic ignition unit is bad.
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