Montero LS 4WD V6-2972cc 3.0L SOHC 24 Valve (1996)
MFI Relay: Testing and Inspection
POWER SUPPLY (MFI RELAY) AND IGNITION SWITCH-IG
INSPECTION
Using Scan Tool
HARNESS INSPECTION
STEP 1. Measure the ignition Switch-(IG) terminal input voltage.
-
Engine control module connector: Disconnected
Voltage (V):
0 - 1 (Ignition switch: OFF)
Battery positive voltage (Ignition switch: ON)
OK: GO TO STEP 2
NG: Repair the harness. (82 - Ignition switch or inspect the ignition switch.)
STEP 2. Measure the power supply voltage of the MFI relay.
-
Ignition switch: OFF
-
MFI relay connector: Disconnected
Voltage (V): Battery positive voltage
OK: GO TO STEP 3
NG: Repair the harness. (A4 - Battery, A8 - Battery)
STEP 3. Check for an open circuit or a short-circuit to ground between the MFI relay and the engine control module.
-
Engine control module connector: Disconnected
-
MFI relay connector: Disconnected
OK: GO TO STEP 4