Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

Or, hide this message: temporarily or permanently

Ignition Control Module: Testing and Inspection

INSPECTION
Using accurate tester, inspect the following items, and replace if defective.
1. Primary resistance
2. Secondary coil resistance

CAUTION: If the resistance is extremely low, this indicates the presence of a short-circuit.

Specified resistance:




[Primary side]
Between terminal No.1 and No.2: 0.73 ohm ± 10%
Between terminal No.2 and No.4: 0.73 ohm ± 10%




[Secondary side]
Between (A) and (B): 12.8 kohm ± 15%
Between (C) and (D): 12.8 kohm ± 15%

3. Insulation between primary terminal and case: 10 Mohm or more.