Montero V6-3.8L SOHC (2005)
Hazard Warning Light Circuit
CIRCUIT OPERATION
If the ETACS-ECU receives "ON" signal from the hazard warning light switch, the ETACS-ECU turns on the flasher timer (incorporated in the
ETACS-ECU), thus causing the turn-signal lights to flash.
TECHNICAL DESCRIPTION (COMMENT)
If the hazard warning lights do not flash, the power supply line to the ETACS-ECU (dedicated to the turn-signal lights) or the ETACS-ECU may be
defective.
TROUBLESHOOTING HINTS
-
The hazard warning light switch may be defective
-
The ETACS-ECU may be defective
-
The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.
DIAGNOSIS
Required Special Tools:
-
MB991223: Harness Set
-
MB991958: Scan Tool (MUT-III Sub Assembly)
-
MB991824: Vehicle Communication Interface (V.C.I.)
-
MB991827: MUT-III USB Cable
-
MB991911: MUT-III Main Harness B
STEP 1. Verify the turn-signal light operation.
Q: Do the turn-signal lights illuminate normally?
