Diagnostic System Check - Instrument Panel Cluster

A Diagnostic System Check - Instrument Cluster (Part 1 Of 4):

A Diagnostic System Check - Instrument Cluster (Part 2 Of 4):

A Diagnostic System Check - Instrument Cluster (Part 3 Of 4):

A Diagnostic System Check - Instrument Cluster (Part 4 Of 4):

CIRCUIT DESCRIPTION
The Instrument Panel Cluster (IPC) diagnostic system check is a test to identify an electronic system malfunction. The IPC diagnostic system check is the starting point for any IPC complaints. Understanding and using the IPC diagnostic system check table will reduce diagnostic time and prevent the unnecessary replacement of parts.

TEST DESCRIPTION
The step number(s) below refer to the same step number(s) in the IPC diagnostic system check table.
1. This step determines if the scan tool can be powered up by the data link connector
2. Since most of the diagnostic procedures require a scan tool, serial data must be available. This step determines if communications can be established with the IPC.
3. This step determines if the Class 2 line is operational and can communicate to other module on the line.
4. This step determines if CKT 340 is shorted to ground and opens the RADIO fuse.
5. This step determines if CKT 340 is still shorted to ground or if CKT 340 was an intermittent problem.
7. This step determines if CKT 1020 is shorted to ground and opens the IGN 0 fuse.
8. This step determines if CKT 1020 is still shorted to ground or if CKT 1020 was an intermittent problem.
10. This step determines if CKT 41 is shorted to ground and opens the CRUISE fuse.
11. This step determines if CKT 41 is still shorted to ground or if it was an intermittent problem.
13. This step determines if CKT 39 is shorted to ground and opens the IGN 1 fuse.
14. This step determines if CKT 39 is still shorted to ground or if it was an intermittent problem.
16. This step determines if the IPC CKT 1020 is open between the IPC and the IGN 0 fuse.
17. This step determines if the IPC CKT 1020 is shorted to battery between the IPC and the IGN 0 fuse.
18. This step determines if the IPC CKT 340 is open between the IPC and the RADIO fuse.
19. This step determines if the IPC ground CKT 451 is open
20. This step determines if the IPC CKT 41 is open between the IPC and the CRUISE fuse.
21. This step determines if the IPC CKT 39 is open between the IPC and the IGN 1 fuse.
22. This step determines if the IPC class 2 CKT 1036/1132 is open between the IPC and the data line connector.