Pinpoint Test X: No Power To The Scan Tool

Communications Network

Pinpoint Test X: No Power To The Scan Tool

Refer to Wiring Diagrams Set 14, Module Communications Network for schematic and connector information. Diagrams By Number

Normal Operation

The scan tool is connected to the Data Link Connector (DLC) to communicate with the High Speed Controller Area Network (HS-CAN) and the Medium Speed Controller Area Network (MS-CAN) communications network. Voltage for the scan tool is provided by circuit SBP20 (GN/RD). Ground is provided by circuit GD133 (BK).

This pinpoint test is intended to diagnose the following:

- Fuse
- Wiring, terminals or connectors
- Scan tool

PINPOINT TEST X: NO POWER TO THE SCAN TOOL

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

X1-X3: