LS1 Trigger Information
Sensor Information
Trigger System
The LS1 engine has a trigger system mounted on the crankshaft that has a 24x tooth pattern. The camshaft has a half-moon style tooth.
LS1 Crankshaft showing crank trigger system
LS1 camshaft sprocket showing half moon trigger system
Crank Sensor
The crank sensor is unique in that it is a reluctor sensor that has internal signal conditioning to convert the signal into a digital Hall Effect style. As such the ECU should be configured as a Hall Effect crank sensor. It uses the Falling edge of the signal which has a common timed edge. The Rising edge of the signal has unique timed signals that cannot be used by the Haltech Elite ECU range. It is located above the starter motor towards the rear of the engine block. Gen 3 sensors are black, Gen 4 sensors are grey and cannot be used with a gen 3 crankshaft trigger pattern.
| Crank Sensor Pin | Haltech Connection |
| A | Trigger + (Yellow) |
| B | Signal Ground (Blue) |
| C | 12V+ (Red) |
Cam Sensor
The LS1 Cam Sensor is of a normal Hall Effect type. For Gen 3 engines it is located at the back of the engine at the top of the V.
| Cam Sensor Pin | Haltech Connection |
| A | Trigger + (Yellow) |
| B | Signal Ground (Blue) |
| C | 12V+ (Red) |
Trigger Configuration
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