User Manual

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AEM Performance Electronics

2205 126

Street Unit A, Hawthorne, CA. 90250

Phone: (310) 484-2322 Fax: (310) 484-0152

http://www.aemelectronics.com

Instruction Part Number: 10-4900 Rev B

 2012 AEM Performance Electronics

Instruction Manual

P/N 30-4900 Wideband Failsafe Gauge

Wideband Failsafe Gauge Parts List

This product is legal in California for racing vehicles only and should never be used on public highways.

WARNING:

!

This installation is not for the electronic novice or the PC illiterate!

Use this system with EXTREME caution! If you are not well versed

in electronics and vehicle instrumentation or are not PC literate,

please do not attempt the installation. Refer the installation to an

AEM trained tuning shop. A list of AEM trained tuning shops is

available at www.aemelectronics.com/dealer_locator.php or by

calling 800-423-0046. You should also visit the AEM Performance

Electronics Forum at http://www.aemelectronics.com.

NOTE: AEM holds no responsibility for any engine damage that

results from the misuse of this product!

Qty Description Qty Description

1 Wideband Failsafe Gauge 1 Faceplate, Lambda Black

1 UEGO Sensor 1 Faceplate, Vacuum Black

1 UEGO Harness 1 Harness, Input / Output

1 Install Kit w/ Bung 1 Rubber Band

1 Power Harness 1 Wideband Failsafe Instructions

1 USB Cable 1 Gauge Box

1 Faceplate, AFR White 1 Boost Hose Adapter

1 Faceplate, Boost Black 1 Vacuum Hose, 7/64” ID x 36” L

1 Faceplate, Boost White 1 Silver Bezel

Summary of content (21 pages)

PAGE 1
Instruction Manual P/N 30-4900 Wideband Failsafe Gauge ! WARNING: This installation is not for the electronic novice or the PC illiterate! Use this system with EXTREME caution! If you are not well versed in electronics and vehicle instrumentation or are not PC literate, please do not attempt the installation. Refer the installation to an AEM trained tuning shop. A list of AEM trained tuning shops is available at www.aemelectronics.com/dealer_locator.php or by calling 800-423-0046.
PAGE 2
GETTING STARTED THIS PRODUCT DOES NOT INCLUDE SOFTWARE IN THE PACKAGING. PLEASE DOWNLOAD AND INSTALL THE WIDEBAND FAILSAFE CONFIGURATION SOFTWARE FROM THE AEM WEBSITE AT: www.aemelectronics.com/downloads Alternatively, register on the AEM Electronics Forums at http://forum.aempower.com/forum/index.php Click on the All Software & Firmware Downloads forum. Click on the AEM Wideband Failsafe Software link to reach the download page.
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Overview AEM Wideband Failsafe is an advanced safety device that allows the end user to closely monitor the performance of their engine. As a tuning tool, this device provides the ability to accurately monitor AFR, while actively protecting the engine by constantly recording AFR curves and activating a user-defined failsafe strategy if it runs dangerously lean or excessively rich.
PAGE 4
Installation 1. Disconnect the negative battery cable. 2. Temporarily install gauge without bracket into desired mounting location. Gauge mounts into a 2-1/16” (52MM) hole. The supplied rubber band can be used as a spacer around the gauge if it fits loosely in mounting hole. 3. Locate a suitable place in the exhaust system to install the included oxygen sensor weld bung. On nonturbocharged engines, mount the oxygen sensor in the exhaust system at least 18 inches downstream from the exhaust port.
PAGE 5
. Next the main 16-pin connector will be manually wired into the vehicle. Pin Color Description 1 Black Ground; connect to good chassis ground or directly to battery negative (−) terminal 2 Red Ignition power; connect to a fused key on +12V power source 3 Black USB - Dedicated 4 N/C Reserved 5 Red USB - Dedicated 6 Green USB - Dedicated 7 Blue *OPTIONAL* Ground output; connect to an external auxiliary device (1.
PAGE 6
7. Install USB cable so the PC end of the cable is easily accessible and route the gauge end of cable to the gauge mounting location. USB cable is meant to be permanently installed to gauge and left in vehicle. Stow PC end of cable in location such as glove box or center console, etc. Wideband Failsafe Configuration In this tab, the AFR monitoring and alarm output functionality of the Wideband Failsafe can be configured. Air to Fuel Ratio vs. Pressure Description Displays AFR vs. Pressure data points.
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Logger Button Log Percentage Download Log Clear Log Description Displays current amount of data recorded Downloads all the collected AFR data that is stored in the logger; will prompt to save log to disk; log files saved as .daq for direct viewing in AEMdata program Clears all stored AFR data from the logger RPM Parameter RPM Description Displays the current engine speed dictated by the Pulses Per Revolution option.
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Gauge Configuration In this tab, the gauge lighting and display features can be configured.
PAGE 9
Wideband Failsafe Tuning The following is a basic guideline strategy for configuring the Wideband Failsafe for the first time. The ideal time to configure the Wideband Failsafe is while the vehicle is being dyno tuned. Ensure your engine is fully functional mechanically before starting to configure the Wideband Failsafe! 1. In the Wideband Failsafe Configuration tab, click Clear Graph and Reset Limits to zero all settings. 2.
PAGE 10
3. Run the engine as you would normally drive the vehicle then complete a series of long sweeping high rd th load 3 and 4 gear pulls going from low to high RPM each time to populate the graph with AFR data. Avoid making quick hard pulls as this may skew the AFR data points. Repeat this procedure until a baseline AFR curve is established. Note: You may notice that a few random AFR data points are plotted well outside of the normal AFR curve.
PAGE 11
4. With a baseline AFR curve now established, click on Auto Set Limits and the software will produce its best suggested high and low AFR limit lines based on the populated AFR data shown on the graph. Review and adjust the high and low AFR limit lines as needed to contour the lines around the baseline AFR curve (shown below). This can be done by clicking on a breakpoint and either dragging up or down with the mouse or by clicking the up and down arrows on the keyboard.
PAGE 12
Data Logger The Wideband Failsafe has an internal logger that can store approximately 2.5 hours of data. The system maintains two levels of data logs. First, all AFR data points are stored and downloadable for viewing on the AFR vs. Pressure Graph in the Wideband Failsafe Configuration tab. Second, all inputs, outputs, and alarm triggers are logged in special log file format for viewing with the AEMdata software that comes as part of the Wideband Failsafe download package.
PAGE 13
Plot One Parameter AFR AFR Upper Limit AFR Lower Limit Description Current measured AFR (Gasoline) Current upper AFR limit value as set from the Wideband Failsafe Configuration tab Current lower AFR limit value as set from the Wideband Failsafe Configuration tab Plot Two Parameter Manifold Pressure Engine Speed Description Current measured Manifold Pressure in PSIg Current measured RPM, if connected and used Plot Three Parameter Alarm Source Alarm Status Alarm Reset Limit Alarm Reset Counter Alarm Delay
PAGE 14
Output Configuration The Wideband Failsafe has one ground (low side) output that is triggered when an alarm condition exists. This output can be used in a multitude of ways to reduce boost, retard ignition timing, or otherwise protect an engine in the event there is a problem with the fuel system.
PAGE 15
NC/NO Relay The following are examples of how a NC/NO relay (Bosch PN 0-332-019-203 or similar) can be configured for use with the Wideband Failsafe. Signal Interrupt: The low side (ground) output from the Wideband Failsafe can be used to turn ON a NC (normally closed) relay and interrupt the output signal from a boost controller to its boost solenoid (shown below).
PAGE 16
Appendix I - Analog Outputs There are 2 analog outputs from the Wideband Failsafe; Pressure (MAP) and AFR (O2). These outputs are both linear DC voltage signals that vary with Pressure or AFR. These signals are used for sending information to a data logger or an engine management system such as an AEM EMS, AEM F/IC, AEM Infinity, etc. Pressure Output Transfer Function Pressure (psig) = (10 * Volts) – 16 Voltage Pressure (psig) Pressure (Bar) 0.5 -11 0.25 Pressure (kPA) 25 1.0 -6 0.59 59 1.
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Appendix II - Changing Faceplate / Bezel The Wideband Failsafe gauge comes with the black bezel and Air/Fuel-Gasoline faceplate installed. However, a silver bezel and multiple faceplates are also included. To change them, orient the gauge so you are looking at the faceplate. Rotate the bezel counter-clockwise to unscrew it from the gauge cup. The bezel, lens, and rubber spacer are all removable. Next, remove the faceplate, but note the two keyways on each side.
PAGE 18
Appendix III - AEMnet The following instructions describe the proper installation of the optional AEMnet Harness (303439), which is used to connect the Wideband Failsafe AEMnet communication lines to a second (or multiple) AEMnet device(s). 1. Disconnect the Wideband Failsafe 16-pin harness connector from the Wideband Failsafe gauge. The harness connector has a latch on the bottom side that needs to be squeezed as the connector is lightly freed from the gauge. Refer to Figure 1 below. Figure 1 2.
PAGE 19
4. Insert the AEMnet+ terminal (white wire) into the available Pin 13 on the Wideband Failsafe connector. Push the wire in until the locking mechanism on the terminal and connector lock into place. Pull lightly on the white wire to confirm the locking mechanism has latched. Figure 4 below shows the correct placement of the AEMnet+ terminal. Figure 4 5. Insert the AEMnet- terminal (green wire) into the available Pin 12 on the Wideband Failsafe connector.
PAGE 20
AEMnet Messages Message ID: Rate: Byte 0 1 2 3 4 5 6 (bit0) 6 (bit1) 6 (bit2) 6 (bit3) 6 (bit4) 6 (bit5) 6 (bit6) 6 (bit7) 7 (bit0) 7 (bit1) 7 (bit2) 7 (bit3) 7 (bit4) 7 (bit5) 7 (bit6) 7 (bit7) Message ID: Rate: Byte 0 1 2 3 4 5 6 7 Message ID: Rate: Byte 0 1 2 3 4 5 6 7 0x00000026 (29-bit) 10mS continuous Label Data Type Scaling Offset Range Lambda 16 bit unsigned .0001 Lambda/bit 0 0 to 6.5535 Lambda Pressure 16 bit unsigned .001 PSI/bit -15 -15 to 50.535 PSI RPM 16 bit unsigned .
PAGE 21
12 Month Limited Warranty Advanced Engine Management, Inc. warrants to the consumer that all AEM High Performance products will be free from defects in material and workmanship for a period of twelve (12) months from date of the original purchase. Products that fail within this 12 month warranty period will be repaired or replaced at AEM’s option, when determined by AEM that the product failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of the AEM part.