Test Messages - Midtronics MDX-655 Instruction Manual

For a more decisive result, the tester may prompt you for additional information.
The messages in the following table may appear before the tester can display
a result.
Test Message
BAT. TEMPERATURE Select ambient temperature above or below 0 ºC
CHARGE STATE
SURFACE CHARGE
DETECTED
CHECK
CONNECTION
ENGINE REV NOT
DETECTED PRESS
WHILE REVVING
REVERSE
CONNECTION
SYSTEM NOISE
CHECK LOADS
UNSTABLE
BATTERY
WIGGLE
CLAMPS
www.midtronics.com

Test Messages

Select before or after battery has been charged.
Remove the surface charge before it begins testing.
Testing will resume after charge has been removed.
One or both clamps are not making proper contact
with the battery terminals.
Tester has not detected an increase in engine r.p.m.

Clamps are connected in the wrong polarity:
positive to negative or negative to positive.
In-vehicle testing. Tester has detected computer,
ignition noise or parasitic drain. Make sure all vehicle
loads are off including open doors and ignition switch.
Out-of-vehicle. Weak battery, should be charged and
retested.
Clamps are not making good contact with
battery terminals
•
Interpretation
17
•