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Signal Flashes left for right turn signal 2005 Ion 2
At least once a week while driving, I will engage the right turn signal but the left blinker is flashing. Very dangerous. Anyone have any fixes or have experienced this.
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You have a body control module problem, more then likely . The BCM turns the turn signal on an off. Have a scan tool hooked up (a profesional grade scan tool ) One that can read codes in the BCM.
Turn Signal Lamps
The STOP/TURN/HAZARD fuse in the instrument panel (I/P) fuse block supplies battery positive voltage to the body control module (BCM) for the turn signal lamps. When the turn switch is placed in the LEFT TURN or RIGHT TURN position, ground is applied from G202 through the turn switch, to the turn signal switch signal circuit and to the BCM. The BCM then applies battery positive voltage to front and rear turn signal lamps supply voltage circuits. The left front turn signal lamp is grounded at G100, right front at G101, left rear at G301 and the right rear is at G302.
The turn signals are controlled by the BCM
Turn Signal Lamps
The body control module (BCM) is responsible for controlling the turn signals and hazard lamps. When the turn signal switch is placed in either the left turn or right turn position, the BCM receives a signal from the turn signal switch. The BCM then sends an on-off voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, the BCM receives a signal from the hazard switch. The BCM then will send an on-off voltage signal to all the turn signal lamps. All the turn signal lamps will flash including both IPC turn signal indicators.
I would suspect a problem with the BCM or maybe corrosion in the under hood fuse box . Wires from the BCM to the front turn signals go through the underhood fuse box.
Your best bet ,take it to a qualified repair shop that has a diagnostic scan tool that can read BCM DTC'S - diagnostic trouble codes
DTC B3948 Left Front Turn Signal Circuit
The body control module (BCM) controls the left front turn signal, hazard lamp, and daytime running lamp (DRL). The BCM supplies voltage to control the lighting functions. The BCM monitors the left turn signal lamp supply voltage circuit for proper operation.
DTC B3949 Right Front Turn Signal Circuit
Hi Mike, You mentioned the turn signal switch can cause burning plastic smell from under the hood (12 years ago on a Chevy)
I drive a 2005 Acura MDX Touring 4D SUV. Two weeks ago, I noticed a light flickering behind the VTM-4 button. At a stop light, I turned on the left blinker and it wouldn't stop blinking.
An hour before, my SUV would not start. When I turned the steering wheel slightly right, the car finally started. I was performing deliveries, so I couldn't take a chance for the car not to start again. Therefore, I just kept the car running to finish my shift.
When the blinker would not shut off, I had to end my shift. Once I arrived home, I just parked the car: The left blinker continued to blink. I tried to start the car again and it just clinked along with the blinking left turn signal.
The next morning, I attempted to start the car again. After a few unsuccessful attempts, I turned the steering wheel slightly right and it started. However, the left blinker remained on.
I tried to start the car once again and only heard clicking. All of a sudden, I smelled a burning plastic smell and a small amount of smoke came from under the hood.
I was thinking about pulling the fuse to the turn signal. I've had past challenges with starting the car and the VTM-4 and engine light light on. OBD codes produced a Bay 2 Sensor 2 O2 sensor. In the past, my left fog light got knocked off and the connectors are exposed.
Would greatly appreciate your expert advice on what I can do to start this car up and to cancel out the left turn signal. Thank you for your time.
Check for power at the socket. If there is no power I would suspect the flasher relay wich supplies power to each bulb individually after it gets the right or left signal from the switch.
When its blinking fast look at both front and rear to verify which bulb isnt flashing. If the right works OK, then the flasher is OK. The flasher is INSIDE the front control module/integrated power module. If you cant find the problem, you may need a dealer to check it.
You need to check your left side turn/park lamp bulbs for correct part # & installation.If that checks out you deffinetely have a ground problem.When you have other lights blinking with you turn signals you have either a bulb incorrect or a bad/poor ground.If bulbs check out check your forward lamp harness ground.Hope this helps
Typical problems like this are usually related to the turn signal switch, or the bulb. However, it is possible that you have a loose connection in your turn signal housing. I would check the housing and wiring going to the bulb, first!
IF you rule that out, then next step is turn signal switch. This will be replacement of the unit.
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