Question
How much out of spec. indicates need to replace coils?
Bosch specs are Primary resistance = 500 mΩ, secondary resistance = 13.3 kΩ
Coil bench test results for resistance:
4 Pack A
Primary
Pin 1 -3 = 2.8
Pin 1-2 = 2.4
*Pin 2-3 = 2.3
Secondary
1 - 4 = 13.63
2 - 3 = 13.9
4 Pack B
Primary
Pin 1 -3 = 2.7
Pin 1-2 = 2.2
*Pin 2-3 = 2.1
Secondary
1 - 4 = 11.22
2 - 3 = 11.03
*values between these pins are probably irrelevant
How much out of spec. indicates need to replace coils?
Bosch specs are Primary resistance = 500 mΩ, secondary resistance = 13.3 kΩ
Coil bench test results for resistance:
4 Pack A
Primary
Pin 1 -3 = 2.8
Pin 1-2 = 2.4
*Pin 2-3 = 2.3
Secondary
1 - 4 = 13.63
2 - 3 = 13.9
4 Pack B
Primary
Pin 1 -3 = 2.7
Pin 1-2 = 2.2
*Pin 2-3 = 2.1
Secondary
1 - 4 = 11.22
2 - 3 = 11.03
*values between these pins are probably irrelevant
