Montero V6-3.8L SOHC (2005)
CIRCUIT OPERATION
The RV meter calculates the ambient air temperature using the ambient air temperature sensor fitted on the vehicle side.
TECHNICAL DESCRIPTION (COMMENT)
When other indications are normal, the malfunction of ambient air temperature sensor is considered.
TROUBLESHOOTING HINTS
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Malfunction of the ambient air temperature sensor
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Damaged harness wires and connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB991958: Scan Tool (MUT-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: MUT-III USB Cable
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MB991911: MUT-III Main Harness B
STEP 1. Check the communication and connection (M-BUS) of the service function.
1. Press the adjusting switch with the ignition switch at the "LOCK" (OFF) position. While holding the switch on the pressed condition, turn the
ignition switch to "ACC" position.
2. When the adjusting switch is continuously pressed for more than five seconds, the service function is activated at the same time with the reception
signal sound (pip sound) and the service mode screen is displayed.
3. Check the communication and connection.
Q: Isn't there any abnormality on the M-BUS?
YES: Go to Step 2.
NO: Go to Step 3.
STEP 2. Check the communication and connection of the service function (SWS).
Q: Isn't there any abnormality on SWS?
YES: the RV meter display should operate normally.
NO: Refer to SWS Symptom Procedure.
STEP 3. Using scan tool MB991958, read the A/C diagnostic trouble code.
CAUTION: To Prevent to damage to scan toll MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.
