Davis Instruments 8241 User Manual

Welcome to CarChip 

87 

Trouble Log Summary View 

Date and time, vehicle ID, trouble code, problem description 

Trouble Log Problem View 

Date and time, vehicle ID, CarChip ID, trouble code, problem 
description, comments, OBDII freeze frame info (parameters 
included in freeze frame vary from car to car) 

Data Options 

 

Supported Unit Systems  

U.S., Metric, S.I., custom 

Vehicle Speed Sampling Interval  

1, 5, 10, 20, 30 or 60 seconds 

Other Parameters Sampling Intervals 
(E/X only)  

5, 10, 20, 30, or 60 seconds 

Vehicle Speed Bands  

4, user configurable, use to identify typical vs atypical 
vehicle operation 

Calculated Data  

Hard and extreme braking, hard and extreme acceleration 

Data Parameters for CarChip and CarChip E/X  

Vehicle Speed  

0 to 158 mph, 0 to 255 kph, 0 to 70 
m/s  

0.6 mph, 1 kph, 0.3 
m/s 

Trip Distance Traveled  

0 to 10,000 miles, 0 to 16,000 km 

0.1 m, 0.1 km 

Acceleration/Deceleration 
Threshold  

0 to 3 G, 0 to 30 m/sec

2

 

0.03 G, 0.3 m/sec

2

 

*Range and resolution of sensor measurements only. Accuracy is dependent on the accuracy of the 
vehicle’s sensors. 

Data Parameters for CarChip E/X Only  

Engine Speed  

0 to 16,384 rpm 

1 rpm 

Throttle Position  

0 to 100% 

 0.1% 

Coolant Temperature  

-40° to +420°F, -40° to +215°C 

2°F, 1°C 

Engine Load  

0 to 100% 

0.1% 

Air Flow Rate  

0 to 8714 lb/min, 0 to 655.35 
gm/sec 

0.1 lb/min, 0.01 
gm/sec 

Intake Air Temperature  

-40° to +420°F, -40° to +215°C  

2°F, 1°C 

Intake Manifold Pressure  

0 to 75 in. hg., 0 to 255 kPaA 

0.3 in. hg., 1 kPaA