RL V6-3474cc 3.5L (1998)
Information Bus: Diagnostic Trouble Code Tests and Associated Procedures
Communication Line Test
Communication Line Test
1. Continuity Test
Check for continuity according to the table.
-
If there is continuity, go to step 2.
-
If there is no continuity, check for an open in the wire
2. Voltage Test
A. Turn the ignition switch ON (II).
B. Check for voltage between communication line and ground:
The voltage should match the following table.
*
If the voltage is too high:
A. Check for short to another wire.
B. Check for poor contact at the connector on the receiver side unit.
C. Faulty circuit in the receiver side unit.
*
If the voltage is too low:
A. Check for short to ground or to another wire.
B. Check for poor contact at the connector on the transmit side unit.
C. Faulty circuit in the transmitter side unit.
*
If any control units appears to be faulty, select one control unit, substitute a known-good control unit, then recheck. If the system works properly,
the original control unit is faulty; replace it. If there is still a malfunction, a substitute the known good control unit for another control unit, then
recheck. If the system works properly, that control unit is faulty; replace it.
