Lancer LS L4-2.0L SOHC (2002)
STEP 2. Check the input signal (by using the Pulse check).
Check input signal from the hazard warning light switch.
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Check that scan tool MB991502 sounds when the hazard warning light switch is turned from "OFF" to "ON."
Q: Does scan tool MB991502 sound when the hazard warning light switch is turned from "OFF" to "ON"?
YES: Replace the ETACS-ECU. Check that the hazard warning lights illuminate normally.
NO: Refer to Inspection Procedure M-2 "ETACS-ECU does not receive a signal from the hazard warning light switch."
Part 1
Flasher Timer: The Right or Left Turn-signal Light does not Illuminate