Chrysler 2005 Crossfire SRT6 Service Manual page 705

ZH
*DRB III DOES NOT POWER UP (CONTINUED)
FUSED B(+) CIRCUIT OPEN
GROUND CIRCUIT OPEN
For a complete Data Link Connector Circuit Diagram, (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES - SCHEMATICS AND DIAGRAMS).
Diagnostic Test
1.
MEASURE THE VOLTAGE OF THE DLC POWER CIRCUIT
Note: If the LEDs 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 16-way connector cavity 16). A minimum of 11 volts is
required to adequately power the DRB III . Check for a proper ground at DLC cavity 4. If all connections are
proper between the DRB III and the vehicle or other devices and the vehicle battery is fully charged, an
inoperative DRB III may be the result of a faulty cable.
Turn the ignition off.
Measure the voltage of the Fused B(+) circuit at cavity 16 of the Data
Link Connector.
Is the voltage above 11 volts?
Yes >> Go to 2
No >> System voltage must be above 11 volts. Check Fuse 14 in
the Underhood Accessory Fuse Block. Repair the voltage
concern as necessary.
Perform BODY VERIFICATION TEST.
2.
MEASURE THE RESISTANCE OF THE DLC GROUND CIRCUIT
Measure the resistance between ground the Ground circuit at cavity 4
of the Data Link Connector.
Is the resistance below 5.0 ohms?
Yes >> Inspect the DRB III for a possible malfunction.
Perform BODY VERIFICATION TEST.
No >> Repair the DLC Ground circuit for an open.
Perform BODY VERIFICATION TEST.
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 3
POSSIBLE CAUSES