Grand Cherokee 2WD V8-4.7L VIN J (2004)
Body Control Module: Scan Tool Testing and Procedures
DRB III Error Messages and Blank Screen
Under normal operation, the DRBIII(R) will display one of only two error messages:
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User-Requested WARM Boot or User-Requested COLD Boot
If the DRBIII(R) should display any other error message, record the entire display and call the STAR Center for information and assistance. This is a
sample of such an error message display:
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.
DRB III Safety Information
WARNING: EXCEEDING THE LIMITS OF THE DRBIII(R) MULTIMETER IS DANGEROUS. IT CAN EXPOSE YOU TO SERIOUS OR
POSSIBLY FATAL INJURY. CAREFULLY READ AND UNDERSTAND THE CAUTIONS AND THE SPECIFICATION LIMITS.
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Follow the vehicle manufacturer's service specifications at all times.
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Do not use the DRBIII(R) if it has been damaged.
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Do not use the test leads if the insulation is damaged or if metal is exposed.
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To avoid electrical shock, do not touch the test leads, tips, or the circuit being tested.
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Choose the proper range and function for the measurement. Do not try voltage or current measurements that may exceed the rated capacity
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Do not exceed the limits shown in the table below:
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Voltage between any terminal and ground must not exceed 500v DC or 500v peak AC.
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Use caution when measuring voltage above 25v DC or 25v AC.
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Use the low current shunt to measure circuits up to 10A. Use the high current clamp to measure circuits exceeding 10A.
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When testing for the presence of voltage or current, make sure the meter is functioning correctly. Take a reading of a known voltage or current
before accepting a zero reading.
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When measuring current, connect the meter in series with test lead.
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Disconnect the live test lead before disconnecting the common test lead.
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When using the meter function, keep the DRBIII(R) away from spark plug or coil wires to avoid measuring error from outside interference.
DRB III 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(R).
If all connections are proper between the DRBIII(R) and the vehicle or other devices, and the vehicle battery is fully charged, and inoperative DRBIII(R)
may be the result of faulty cable or vehicle wiring.
Display Is Not Visible
