Description |
An ignition coil is an induction coil in an engine's ignition system which transforms the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs to ignite the fuel. Coils have an internal resistor while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the battery 12 V supply.
Circuit Diagram |
Connector View |
Ignition Coil Terminal Function |
Ignition Coil (Cylinder #1)
Pin No. |
Description |
Connected to |
1 |
Ground |
Chassis |
2 |
ignition Coil #1 Control output |
ECM Connector A (41) |
3 |
- |
|
4 |
Battery power (B+) |
Main Relay |
Ignition Coil (Cylinder #2)
Pin No. |
Description |
Connected to |
1 |
Ground |
Chassis |
2 |
ignition Coil #2 Control output |
ECM Connector A (21) |
3 |
- |
|
4 |
Battery power (B+) |
Main Relay |
Ignition Coil (Cylinder #3)
Pin No. |
Description |
Connected to |
1 |
Ground |
Chassis |
2 |
ignition Coil #3 Control output |
ECM Connector A (20) |
3 |
- |
|
4 |
Battery power (B+) |
Main Relay |
Ignition Coil (Cylinder #4)
Pin No. |
Description |
Connected to |
1 |
Ground |
Chassis |
2 |
ignition Coil #4 Control output |
ECM Connector A (42) |
3 |
- |
|
4 |
Battery power (B+) |
Main Relay |
Removal |
1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal. |
2. |
Remove the engine cover. (Refer to Engine Mechanical System - "Engine Cover") |
3. |
Disconnect the ignition coil connector (A). |
4. |
Remove the ignition coil after loosening the mounting bolt (B).
|
Installation |
1. |
Install in the reverse order of removal.
|