Ranger 2WD V6-3.0L (2008)
Information Bus: Pinpoint Tests
Test A: The PCM Does Not Respond To The Scan Tool Or No High Speed Controller Area Network
(HS-CAN) Communication
PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL OR NO HIGH SPEED CONTROLLER AREA NETWORK
(HS-CAN) COMMUNICATION
Normal Operation
The PCM communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04 (WH/BU) (HS-CAN +) and
VDB05 (WH) (HS-CAN -) provide the network connection to the PCM. The PCM shares the HS-CAN with the 4X4 control module, the restraints
control module (RCM), the occupant classification system module (OCSM), the SJB, and the instrument cluster (IC). Circuits CBB39 (VT/WH) and
SBB21 (GY/RD) provide voltage, and redundant circuit GD108 (BK/VT) provides ground.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
PCM
-
RCM
-
Occupant classification system module (OCSM)
-
4X4 control module
-
IC
-
SJB
A1-A2