3.3.4 HANDLING NO TROUBLE CODE
PROBLEMS
After rea ding Sect ion 3.0 (Syst em Descr ipt ion
an d Fu n ct ion a l Oper at ion ), you shou ld h a ve a bet -
ter u nder st a ndin g of t h e th eor y a n d oper a t ion of t he
on-boa r d dia gn ost ics a nd h ow th is r ela t es t o th e
dia gn osis of a veh icle th a t m ay h ave a drivea bilit y-
rela ted sym pt om or com pla in t . Wh en t her e a r e n o
tr ou ble codes pr esen t, r efer t o th e n o tr ou ble code
(*) t est s.
3.4 USING THE DRBIII!
Refer t o t h e DRBIII" u ser ’s gu ide for in st ru ct ion s
an d a ssist a nce wit h r ea din g t h e DTCs, er a sin g t h e
DTCs, la b scope u sa ge a n d ot h er DRBIII" fu n c-
tion s.
3.4.1 DRBIII! DOES NOT POWER UP
If th e LE Ds do not light or no sou n d is emit ted at
st ar t u p, check for loose cable conn ect ion s or a ba d
cable. Ch eck t h e veh icle ba tt er y volt age a t da t a link
conn ect or ca vit y 16. A m in im u m of 11.0 volt s is
requ ir ed t o a dequ at ely power th e DRBIII". Ch eck
for pr oper gr ou n d con n ect ion at da ta lin k con nect or
cavit ies 4 a nd 5.
If a ll con n ection s a re pr oper bet ween t h e
DRBII I" a n d t h e veh icle or ot her devices, an d t he
veh icle ba t ter y is fu lly ch ar ged, a n in opera t ive
DRBII I" m ay be t h e r esu lt of a fa u lt y ca ble or
veh icle wir in g. F or a bla n k screen , refer t o t h e
appr opr ia t e dia gn ost ic m a nu a l.
3.4.2 DISPLAY IS NOT VISIBLE
Low tem per a t u res will a ffect t h e visibilit y of t he
displa y. Adju st t he con tr a st to com pen sa te for t his
condit ion .
4.0 DI SCLAI MERS, SAFET Y,
WA RNINGS
4.1 DISCLAIMERS
All in form a t ion , illu st ra t ion s a nd specifica t ion s
cont a in ed in t his m a nu a l a re ba sed on t he la t est
in for ma t ion ava ila ble a t t h e t im e of pu blica tion .
Th e righ t is r eser ved t o ma ke cha n ges a t a ny t im e
wit h out n ot ice.
4.2 S AF ET Y
4.2.1 TECHNICIAN SAFETY INFORMATION
WARNING: HIGH-PRESSURE FUEL LINES
DELIVER DIESEL FUEL UNDER EXTREME
PRESSURE FROM THE INJECTION PUMP TO
THE FUEL INJECTORS. THIS MAY BE AS
HIGH AS 23,200 PSI (1600 BAR). USE
EXTREME CAUTION WHEN INSPECTING
FOR HIGH-PRESSURE FUEL LEAKS. FUEL
UNDER THIS AMOUNT OF PRESSURE CAN
PENETRATE SKIN CAUSING PERSONAL
INJURY OR DEATH. INSPECT FOR
HIGH-PRESSURE FUEL LEAKS WITH A
SHEET OF CARDBOARD. WEAR SAFETY
GOGGLES AND ADEQUATE PROTECTIVE
CLOTHING WHEN SERVICING FUEL
SYSTEM.
WARNING: ENGINES PRODUCE CARBON
MONOXIDE THAT IS ODORLESS, CAUSES
SLOWER REACTION TIME AND CAN LEAD
TO SERIOUS INJURY. WHEN THE ENGINE IS
OPERATING, KEEP SERVICE AREA WELL
VENTILATED OR ATTACH THE VEHICLE
EXHAUST SYSTEM TO THE SHOP EXHAUST
REMOVAL SYSTEM.
Set t h e pa r kin g br a ke and block t h e wheels befor e
test in g or r epair in g th e veh icle. It is especia lly
im por t a n t t o block t he wh eels on fr on t wh eel dr ive
veh icles; t h e pa r k in g br ake does not h old th e dr ive
wh eels.
Wh en ser vicin g a veh icle, a lwa ys wea r eye pr o-
tect ion a nd r em ove a ny m et al jewelr y su ch a s
wa t ch ba n ds or br a celet s t h at m igh t ma ke elect rica l
cont a ct.
Wh en dia gn osin g power tr a in syst em pr oblem s, it
is im por ta n t t o follow a ppr oved pr ocedu r es wh er e
applica ble. Th ese pr ocedu r es ca n be fou nd in th e
8
GEN ERAL I N FORM AT I ON
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