Today, just pulling away from the exhaust shop after having a new exhaust put in, I got this code. The DIC said Service Adjustable Suspension. I switched from Tour to Performance mode on my F45 and the DIC instantly cleared. No more codes on the way home.

I watched the exhaust install and no one went near the suspension. The car was lifted on a drive-on lift so the suspension was not hanging during the install.

I realize the H in the code indicates it's history. Does this indicate a momentary glitch?

Anyone know wat this code translates to?

Thanks.

Ed

 

I can't find B3577 in the list I have but RTD=Real Time Damping...

hmmmm...I'd reset and see if it comes back because it's in History and you recently had work done. Might not come back.

BTW, here's a link to the tech section that has the list of codes: http://www.corvetteforum.cc/techtips...D=26&TopicID=1

 

Thanks, C5Cemo. I'll try that.

Ed

 

DTC B3577

Circuit Description

The ESC module supplies 5 volts and a ground to the suspension control switch's voltage divider circuit. The suspension control switch changes the resistance value of the switch circuit which alters the voltage level received by the ESC module on the suspension control signal circuit. There are three possible voltage levels, and each voltage level corresponds to a switch selection position. The three switch positions are TOUR, SPORT and PERF. The ESC module monitors the voltage level on the suspension control switch signal circuit, and will set a DTC if the detected voltage level is not within the calibrated amount.

Conditions for Running the DTC

The ignition ON.
The RTD function enabled.

Conditions for Setting the DTC

The ESC module detects that the suspension control switch signal voltage level is 3.5-4.5 volts.
The condition must be detected for 10 seconds in 4 consecutive ignition cycles.
Action Taken When the DTC Sets
Stores a DTC B3577 in the ESC memory.
Provides shock absorber solenoid control based on the SPORT setting.
Sends a message to the IPC to display the SERVICE RIDE CONTROL message.

Conditions for Clearing the DTC

A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
The ESC module detects that the suspension control switch signal voltage level is less than 3.5 volts.
Use the IPC clearing DTC feature.
Using a scan tool.

Diagnostic Aids

The following conditions may cause an intermittent malfunction to occur:

There is an intermittent short or open in the suspension control switch circuit.
The suspension control switch is in between switch positions.
A DTC B3577 may set if the suspension control switch terminals are making poor contact to the switch, or if there is a small amount of corrosion on the terminals. Check for these conditions first before attempting to use the diagnostic table, as this may correct the condition.


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It could be the installer jostled something when installing the exhaust system. Clear it and see if it returns.

 

Thanks, kewlbrz.

Actually, I think you hit on it. The switch was slightly left of the sport suspension position right before I left the shop, so it may have had a fault because it was set between modes.

Thannks.

Ed


[Modified by Patches, 7:10 AM 11/24/2001]