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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 542 (STEERING WHEEL AND STEERING COLUMN)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2860TEST DESCRIPTION
2006 Chevrolet Suburban K1500, 5.3 Z

Test Description

2006 Chevrolet Suburban K1500, 5.3 ZSECTION Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. 3:  Tests for the proper operation of the circuit in the high voltage range.
  2. 4:  Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
  3. 5:  Tests for a short to ground in the 5 volt reference circuit.
DTC B2860

Step Action Value(s) Yes No
Schematic Reference:  Tilt/Telescoping Steering Column Schematics  
Connector End View Reference:  Steering Wheel and Column Connector End Views  
1 Did you perform the Steering Wheel and Column Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Steering Wheel and Column 
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Column Position Feedback data parameter in the Seat Control Module Column Info list.
Does the scan tool indicate that the Column Position Feedback data parameter is within the specified range?		 0.1-4.78 V Go to Diagnostic Aids Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the telescoping sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Column Position Feedback data parameter.
Does the scan tool indicate that the Column Position Feedback data parameter is greater than the specified value?		 4.78 V Go to Step 4  Go to Step 8 
4 
  1. Turn OFF the ignition
  2. Connect a 3 amp fused jumper wire between the signal circuit of the telescoping sensor and the low reference circuit of the telescoping sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Column Position Feedback data parameter.
Does the scan tool indicate that the Column Position Feedback data parameter is less than the specified value?		 0.1 V Go to Step 5  Go to Step 9 
5 
  1. Turn OFF the ignition
  2. Disconnect the fused jumper wire.
  3. Connect a 3 amp fused jumper wire between the 5 volt reference circuit of the Telescoping Sensor and the signal circuit of the Telescoping Sensor.
  4. Turn ON the ignition, with the engine OFF.
  5. With a scan tool, observe the Column Position Feedback data parameter.
Does the scan tool indicate that the Column Position Feedback data parameter is greater than the specified value?		 4.78 V Go to Step 7  Go to Step 6 
6 Test the 5 volt reference circuit of the Telescoping Sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 12 
7 Test the 5 volt reference circuit of the Telescoping Sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 11 
8 Test the signal circuit of the Telescoping Sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 12 
9 Test the signal circuit of the Telescoping Sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 10 
10 Test the low reference circuit of the Telescoping Sensor for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 12 
11 Inspect for poor connections at the harness connector of the Telescoping Sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 13 
12 Inspect for poor connections at the harness connector of the Seat Control Module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 15  Go to Step 14 
13 Replace the telescoping sensor. Refer to Telescope Actuator Assembly Replacement .
Did you complete the replacement?		 - Go to Step 15  -
14
IMPORTANT: Perform the set up procedure for the Seat Control Module.
Replace the Seat Control Module. Refer to Memory Seat Control Module Replacement .Did you complete the replacement?		 - Go to Step 15  -
15
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.