Diagnostic Indicator Pattern 7
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
When entering the diagnostic mode, it is necessary to follow the instructions as indicated. Refer to Diagnostic Trouble Code (DTC) Displaying . If the vehicle is not shifted into reverse within 5 seconds after turning the ignition ON, the diagnostic mode will still be initiated but a reverse input wiring fault will be registered as Diagnostic Indicator Pattern 7 as shown in the indicator list.
Verify that the Diagnostic Indicator Pattern 7 displays as shown in diagnostic indicator list.
- If the diagnostic indicator pattern 7 is displayed, refer to Diagnostic Trouble Code (DTC) Displaying and to Diagnostic Trouble Code (DTC) Clearing .
Diagnostic Indicator Pattern 8 and 9
- While still in the diagnostic mode, disconnect the rear object sensors one at a time and verify that the indicator pattern 8 or 9 does not display after the suspect sensors has been disconnected.
- If the indicator pattern 8 or 9 continues to display after each sensor has been disconnected and reconnected, test the object sensor supply voltage circuit and the low reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
- If the indicator pattern 8 and 9 does not display after disconnecting the suspect sensor, replace the suspect sensor.
- If all circuits test normal, replace the object sensor control module.
IMPORTANT:
Diagnostic indicator patterns 8 or 9 are displayed in sequence of diagnostic indicator patterns 2, 3, 4 and 5.