Chrysler PT Cruiser 2001 Service Manual Supplement page 2470

GENERAL INFORMATION
SYMPTOM
RUNS ROUGH/
UNSTABLE/ERRATIC
IDLE
POOR FUEL ECONOMY
3.3.5 NO START INFORMATION
Important Note:
If the Powertrain Control Module has been
changed and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS,
Airbag and SKIM modules when equipped. In ad-
dition, if the vehicle is equipped with a Sentry Key
immobilizer Module (SKIM), Secret Key data must
be updated to enable starting.
3.4 USING THE DRBIII
Refer to the DRB user's guide for instructions and
assistance with reading trouble codes, erasing trou-
ble codes, and other DRB functions.
3.5 DRBIII ERROR MESSAGES AND
BLANK SCREEN
Under normal operation, the DRBIII will dis-
play one of only two error messages:
– User-Requested
Requested COLD Boot
This is a sample of such an error message display:
DIAGNOSTIC TEST
CHECKING SECONDARY IGNITION SYSTEM
CHECKING PCM POWER AND GND CKT
CHECKING ENGINE VACUUM
CHECKING THE FUEL DELIVERY
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE POSITION SENSOR CALIBRATION
CHECKING MAP SENSOR CALIBRATION
CHECKING THE MINIMUM IDLE AIR FLOW
CHECKING IDLE AIR CONTROL MOTOR OPERATION
CHECKING ENGINE MECHANICAL SYSTEMS
CHECKING EVAP EMISSION SYSTEM
CHECKING EGR SYSTEM (IF EQUIPPED)
CHECKING IAT SENSOR
CHECKING PNP SWITCH
CHECKING SECONDARY IGNITION SYSTEM
CHECKING PCM POWER AND GND CKT
CHECKING ENGINE VACUUM
CHECKING THE FUEL DELIVERY
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE POSITION SENSOR CALIBRATION
CHECKING MAP SENSOR CALIBRATION
CHECKING THE MINIMUM IDLE AIR FLOW
CHECKING IDLE AIR CONTROL MOTOR OPERATION
CHECKING ENGINE MECHANICAL SYSTEMS
CHECKING EVAP EMISSION SYSTEM
CHECKING EGR SYSTEM (IF EQUIPPED)
CHECKING IAT SENSOR
CHECKING PNP SWITCH
WARM Boot or User-
ver: 2.14
date: 26 Jul93
file: key_itf.cc
date: Jul 26 1993
line: 548
err: 0x1
User-Requested COLD Boot
Press MORE to switch between this display
and the application screen.
Press F4 when done noting information.
3.5.1 DRBIII DOES NOT POWER UP
If the LED's do not light or no sound is emitted at
start up, check for loose cable connections or a bad
cable. Check the vehicle battery voltage (data link
connector cavity 16). A minimum of 11 volts is
required to adequately power the DRBIII .
If all connections are proper between the
DRBIII and vehicle or other devices, and the
vehicle battery is fully charged, an inoperative
DRBIII may be the result of a faulty cable or
vehicle wiring. For a blank screen, refer to the
appropriate diagnostics procedure.
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