Montero LS 4WD V6-2972cc 3.0L SOHC 24 Valve (1996)
TROUBLESHOOTING HINTS
If, during engine warm-up, the fast-idling speed is not correct, or black smoke is emitted, the problem is usually a malfunction of the coolant
temperature sensor.
INSPECTION
Using Scan Tool
HARNESS INSPECTION
STEP 1. Check for continuity in the ground circuit.
-
Engine coolant temperature sensor connector: Disconnected
OK: GO TO STEP 2
NG: Repair the harness. (A2 - 92, B2 - 92)
STEP 2. Check for an open or short-circuit between the engine coolant temperature sensor and the engine control module.
-
Engine coolant temperature sensor connector: Disconnected
-
Engine control module connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harness. (A1 - 83, B1 - 83)
STEP 3. Measure the power supply voltage.
