Nanny Scan Screen

Sample Screen Shot – Scanning

Viewing Logged Data

Changing a parameter

Filtering log data

The Save Data screen

Engine Monitoring

The “Nanny” screen is where engine parameters are displayed and logged. Up to 10 parameters can be scanned at the same time, at a rate of approx. 35 mS per item. Both standard and “enhanced” parameters are supported, if the scanner is connected to a vehicle that supports them. Most all vehicles will support the standard parameters. The enhanced parameters are specific to LS1 and L67/L36 engines, but may be available with some other models, depending on whether GM used similar coding.

Here is a list of all supported OBD-2 parameters:

CLSD	CLOSED-LOOP STATUS
ECT	ENGINE COOLANT TEMPERATURE
IAT	INTAKE AIR TEMPERATURE
IGN	IGNITION ADVANCE
LD	ENGINE LOAD
LFT1	LONG-TERM FUEL TRIM, DRIVER’S SIDE
LFT2	LONG-TERM FUEL TRIM, PASSENGER SIDE
MAF	MASS AIR FLOW
MAP	MANIFOLD AIR PRESSURE
MPH	VEHICLE SPEED
O2L	OXYGEN SENSOR, DRIVER’S SIDE
O2R	OXYGEN SENSOR, PASSENGER SIDE
RPM	ENGINE SPEED
SFT1	SHORT-TERM FUEL TRIM, DRIVER’S SIDE
SFT2	SHORT-TERM FUEL TRIM, PASSENGER SIDE
TPS	THROTTLE POSITION

These items are specific to the LS1/L67: (some of these will work on other late-model GM vehicles)

B	BOOST (L67 ONLY)
BARO	BAROMETRIC PRESSURE (works on some cars only)
FTC	FUEL TRIM CELL
IAC	IDLE AIR CONTROL MOTOR COUNTS
IDC1	INJECTOR DUTY CYCLE, DRIVER’S SIDE (CALCULATED FROM IPW1 & RPM)
IDC2	INJECTOR DUTY CYCLE, PASSENGER SIDE (CALCULATED FROM IPW2 & RPM)
IGNV	IGNITION VOLTAGE
IPW1	INJECTOR PULSE WIDTH, DRIVER’S SIDE
IPW2	INJECTOR PULSE WIDTH, PASSENGER SIDE
KR	KNOCK RETARD
MAFF	MASS AIR FLOW SENSOR FREQUENCY
MISP	MISFIRE DETECTION: PRIMARY MISFIRING CYLINDER
MISR	MISFIRE DETECTION: REVOLUTIONS WITH MISFIRES
TPSV	THROTTLE POSITION SENSOR VOLTAGE

You can pre-configure up to 10 pages of codes to scan. Your configured list of codes for each page is stored in non-volatile memory. You can switch between current values, min, max, or averages while scanning. You can log data to an internal buffer as well, then step through the scans one by one, or filter the results to get just the data you want.

Saving logs

Logged data can be saved to the internal database & viewed at a later time or downloaded to the PC. Logged data can be exported to Excel or Text files using the LS1M Synchronizer, an add-on to Palm Desktop that is supplied with the scanner. Exporting logs to the PC is as easy as plugging the hot-synch cable in and pressing the hot-synch button.

Autlog Screen

Autolog setup screen…

Automatically log data

Set up the criteria you want to automatically start & stop logging data for totally automatic operation.

Autolog monitoring screen

Monitor engine conditions

View current engine data while the scanner waits for the specified conditions to start logging

Autolog “Last Run” screen

Viewing the results

After the data has been recorded, view a summary of engine parameters during the run. You can also view the data on a frame-by-frame basis.

Gauge Screen

Gauge screen…

Instant readouts

Similar to the Nanny screen, but with larger fonts and no logging, the Gauge screen can act as an additional cockpit gauge. Scan one parameter (such as RPM) and get instant min/max/average for that parameter. Also keep track of 3 other parameters at the bottom of the screen.

Trouble Codes

Trouble Codes…

Logged trouble codes

Diagnostic trouble codes

Retrieves & displays all current and pending trouble codes and a description from an internal database of over 600 code definitions. Also allows resetting of the SES (Service Engine Soon) light. Will also log activity to an internal database that can be viewed on the Palm or exported to the PC.

0-60 Test

0-60 Mph Accel Test

Vroooom!

This screen will measure how many seconds it takes your car to go from a standing start to 60mph (start/stop speeds are configurable). It does this by constantly monitoring MPH until it sees movement. It then starts an internal timer & counts the seconds until 60mph is reached. It will display your speed as well as elapsed time, and an estimate of horsepower based on the vehicle weight (user-entered). For example, on the screen shot at left, the scanner counted 4.71 seconds for the vehicle to pass 60 mph, and based on a 3500-lb curb weight, the estimated horsepower to the wheels is 336.96. Each accel test is also logged to an internal file which can be viewed or copied to the computer.

Logged Accel Tests

Long-Term Fuel Trims

Sample Screen Shot

Checking MAF tuning

This screen is used to collect the long-term fuel trims (LFT), which are the adjustments the car’s computer has made under different conditions, in order to maintain a perfect 14.7:1 air/fuel ratio. Each set of conditions is called a cell. Each cell contains two numbers in it, referring to the percent change that has been made to injector duty cycle on the driver’s and passenger side. A positive number means the computer has had to add fuel; a negative number means fuel has been removed.

Each cell is listed individually on the chart (cells 0-26 are collected). An average value for all cells is given at the bottom. The results are also saved internally in a log file that can be viewed on the Palm or downloaded to the PC.

Logged LTRim Collections