Test H: The Overhead Console Does Not Respond To The Scan Tool

PINPOINT TEST H: THE OVERHEAD CONSOLE DOES NOT RESPOND TO THE SCAN TOOL

H1-H2:

H2-H3:

H4:

Normal Operation
The overhead console communicates with the scan tool through the standard corporate protocol (SCP) communication network. Circuits 914 (TN/OG) (SCP +) and 915 (PK/LB) (SCP-) provide the network connection to the overhead console. The overhead console shares the SCP network with the lighting control module (LCM), the electronic automatic temperature control (EATC) module (if equipped) and the driver door module (DDM) (if equipped). Voltage for the overhead console is provided by circuits 964 (DB/LG) and 931 (OG). Circuit 676 (PK/OG) provides ground.

Possible Causes
- Fuse
- Circuit 676 (PK/OG) open
- Circuit 914 (TN/OG) open (SCP +)
- Circuit 915 (PK/LB) open (SCP -)
- Circuit 931 (OG) open
- Circuit 964 (DB/LG) open
- Overhead console