U2007

DTC U2007 SPI Clock - Out High:

Scan Tool Inoperative:

CIRCUIT DESCRIPTION
This code (both current and history) indicates the Body Control Module (BCM) has sensed a short to the battery condition on the instrument cluster Serial Peripheral Interface (SPI) data out line to the BCM.

CONDITIONS FOR SETTING THE DTC
Meet all of the following conditions:
^ Ignition 0 is active.
^ The serial data SPI clock line from the BCM to the IPC is shorted to battery for 5 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ Disables the instrument cluster clock output
^ Stores DTC U2007 in the BCM memory
^ The instrument cluster illuminates the following indicators:
- THEFT SYSTEM
- ABS
- SERVICE VEHICLE SOON
- The PRNDL indicator is blank.
- The temperature gauge reads zero.

CONDITIONS FOR CLEARING THE DTC
^ The BCM goes to sleep and reinitializes with the malfunction cleared.
^ All the BCM history codes will be cleared after 100 ignition cycles (from OFF to ON ) with no current codes active during the 100 ignition cycles.
^ Use the scan tool.

DIAGNOSTIC AIDS
^ With the ignition switch in the ON position, test for voltage transitions on the SPI data line.
^ When the diagnostics direct you to take electrical measurements at the wiring harness junction blocks, refer to Diagrams.
^ If the DTC is a history DTC, the problem may be intermittent. Perform the above tests while wiggling the wiring and connectors. This may often cause the malfunction to appear.

TEST DESCRIPTION
The numbers below refer to the numbers on the diagnostic table.
2. This step determines if there is a short to voltage in CKT 1323 between the instrument cluster and the body control module (BCM).
4. This step determines it either the instrument cluster or the BCM is malfunctioning.