Crankshaft Position Sensor
- Disconnect crankshaft position sensor. On Cherokee and Comanche, connect ohmmeter across sensor terminal "A" (Orange/Dark Blue wire) and terminal "B" (Black/Light Blue wire). On Wrangler, connect ohmmeter across sensor terminal "A" (Brown/Red wire) and terminal "B" (Red/Green wire).
- Ohmmeter should read 125-275 ohms with engine hot. Replace sensor if reading is not as specified. Also see crankshaft position sensor tests in appropriate TESTS W/CODES article in this section.