Ignition Coil Resistance Test

Turn ignition off. Set ohmmeter on low scale and attach its leads to coil positive and negative terminals. Coil should be isolated from rest of system. Check primary resistance reading.
Set ohmmeter in x1000 scale and attach leads to positive primary terminal and secondary tower. Check secondary resistance reading. Replace coil if not to specifications.

Fig 1: High Voltage Test With Screwdriver (Chrysler Corp.)

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IGNITION COIL SPECIFICATIONS

Application

Primary Resistance (Ohms)

Secondary Resistance (Ohms)

Chrysler Corp. ⁽¹⁾

.70-.85

9000-11, 000

Courier

.81-.99

6800-9200

Mazda

GLC & 808

1.28

13, 500

626 & B2000

.81-.99

7000

⁽¹⁾	Resistance of external resistor should be 1.22-1.49 ohms.

Fig 2: Checking Pick-Up Coil Resistance (Chrysler Corp.)

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