Montero 4WD V6-3.5L SOHC (1998)
HARNESS INSPECTION:
STEP 1. Check for continuity between the volume air flow sensor and the MFI relay.
-
MFI relay connector: Disconnected
-
Volume air flow sensor connector: Disconnected
-
Touch the ohmmeter probes to both ends of the harness.
OK: GO TO STEP 2
NG: Repair the harness. (A4 - B1)
STEP 2. Check for continuity in the ground circuit.
-
Volume air flow sensor connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harness. (A5 - 49)
STEP 3. Check for an open or short-circuit between the volume air flow sensor and the engine control module.
-
Volume air flow sensor connector: Disconnected
-
Engine control module connector: Disconnected
OK: GO TO STEP 4
NG: Repair the harness. (A3 - 61, A7 - 19)
STEP 4. Measure the applied voltage
-
Volume air flow sensor connector: Disconnected
-
Engine control module connector: Connected
-
Ignition switch: ON
Voltage (V): 4.8 - 5.2
OK: STOP
NG: Replace the engine control module.