Subject: | Memory Seats or Tilt/Telescoping Steering Column Inop |
Models: | 2006- 2007 Cadillac DTS |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
A customer may comment the Memory Seats or Tilt/Telescoping Steering Column are inoperative. One or more of the following DTC may be set:
B1395 02 | Device Voltage Reference Output Circuit Shorted to Ground |
B1825 06 | Driver Seat Recline Position Sensor Circuit Short to Ground or Open |
B1850 06 | Driver Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open |
B1860 06 | Driver Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open |
B2105 06 | Front Passenger Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open |
B2355 06 | Driver Seat Front Vertical Position Sensor Circuit Short to Ground or Open |
B2365 06 | Driver Seat Rear Vertical Position Sensor Circuit Short to Ground or Open |
B2375 06 | Driver Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open |
B2850 01 | Telescope Forward Switch Circuit Short to Battery |
B2855 01 | Telescope Rearward Switch Circuit Short to Battery |
B2860 01 | Telescope Position Sensor Circuit Short to Battery |
B2860 06 | Telescope Position Sensor Circuit Short to Ground or Open |
B2860 5A | Telescope Position Sensor Circuit Plausibility Failure |
B2860 61 | Telescope Position Sensor Actuator Stuck |
B2870 01 | Tilt Up Switch Circuit Short to Battery |
B2875 01 | Tilt Down Switch Circuit Short to Battery |
Inspect the Body Wire Harness (1) for cuts and chafes from being pressed against the Instrument Panel Carrier (2) when the driver side Instrument Panel Insulator Panel is installed. The area is located near C203 I/P Harness to the Steering Column Harness (3) and over the Brake Pedal Assembly (4).
Note: The harness will relax and fall away from the Instrument Panel Carrier when the Instrument Panel Insulator Panel is removed.
41 | Ignition 3 Voltage (NR7/N57/N30/N50) |
350 | Ground |
556 | Steering Wheel Position Sensor Low Reference (JL4) |
782 | Memory Seat/Mirror Sensor Low Reference (N37) |
788 | Memory Mirror Position Sensor 5-Volt Reference (N37/A45) |
1056 | Steering Wheel Position Sensor 5-Volt Reference (JL4) |
1381 | LCD Dimming Signal |
1763 | Steering Wheel Position Signal A (JL4) |
1764 | Steering Wheel Position Signal B (JL4) |
1840 | Battery Positive Voltage |
2094 | Steering Column Tilt and Telescope Forward Switch Signal (N37) |
2095 | Steering Column Tilt and Telescope Reverse Switch Signal (N37) |
2096 | Steering Column Tilt and Telescope Up Switch Signal (N37) |
2097 | Steering Column Tilt and Telescope Down Switch Signal (N37) |
2098 | Steering Column Telescope Motor Forward (N37) |
2110 | Steering Column Telescope Motor Rearward (N37) |
2111 | Steering Column Tilt Motor Up Control (N37) |
2112 | Steering Column Tilt Motor Down Control (N37) |
2153 | Steering Column Telescope Motor Signal (N37) |
2154 | Steering Column Tilt Motor Signal (N37) |
2640 | Battery Positive Voltage |
5060 | Low Speed GMLAN Serial Data |
5905 | Ignition Lock Cylinder Solenoid Control (AQ9) |
5979 | Memory Seat Switch High Reference (N37) |
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.