GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Steering 🢒 Steering Wheel and Column - Tilt 🢒 DTC B1396 Device Voltage Reference Output 1 Circuit Range Performance

Object Number: 106565 Size: MF
Tilt Wheel/Column Components
Cell 49 - Power, Ground, Switch, Sensors and Motors
Handling ESD Sensitive Parts Notice

Circuit Description

The steering column tilt/telescoping module (TTM) provides 5 volt reference voltage to the tilt position sensor across TTM connector C2 terminals D and F and to the telescope position sensor across TTM connector C3 terminals D and F. The TTM monitors this voltage to determine if it is within a valid operating range.

Conditions for Setting the DTC

The 5 volt feed monitored within the module falls out of the limits 4.6 volts to 5.2 volts.

Action Taken When the DTC Sets
    • Stores a DTC B1396 in TTM memory.
    • The TTM does not respond to any manual or memory inputs when the voltage is out of range.
    • The TTM switch failure and position sensor failure DTCs do not set while DTC B1396 is current.
    • No driver warning message are displayed for this DTC.

Conditions for Clearing the DTC
    • The 5 volt feed monitored within the module is within the limits 4.6 volts to 5.2 volts for approximately 1.2 seconds.
    • Use the On-Boards clearing DTCs feature.
    • Use a scan tool.

Diagnostic Aids

Refer to the diagnostic chart.

Test Description

The numbers below refer to the step numbers on the diagnostic table:

  1. Perform the Tilt/Telescoping Steering Column Diagnostic System Check before continuing with the diagnosis of this DTC.

    2.

  2. Clear all DTCs after the repair procedure is complete.

DTC B1396 -- 5 Volt Feed Failure/Out of Range

Step

Action

Value(s)

Yes

No

1

Was the Tilt/Telescoping Steering Column Diagnostic System Check performed?

--

Go to Step 2

Go to Tilt/Telescoping Steering Column Diagnostic System Check

2
  1. Turn the ignition switch OFF.
  2. Disconnect the steering column tilt/telescoping module (TTM) connector C2.
  3. Connect a scan tool to the data link connector (DLC).
  4. Turn ignition ON.
  5. Using the scan tool, clear DTCs.
  6. Wait 30 seconds, then check for TTM DTCs.

Does DTC B1396 set again?

--

Go to Step 4

Go to Step 3

3

Replace the tilt actuator. Refer to Tilt Actuator Assembly Replacement - On Vehicle .

Is the replacement complete?

--

Go to Step 7

--

4
  1. Turn the ignition switch OFF.
  2. Leave TTM connector C2 disconnected, and disconnect TTM connector C3.
  3. Turn ignition ON.
  4. Using the scan tool, clear DTCs.
  5. Wait 30 seconds, then check for TTM DTCs.

Does DTC B1396 set again?

--

Go to Step 6

Go to Step 5

5

Replace the telescope actuator. Refer to Telescope Actuator Assembly Replacement - On Vehicle .

Is the replacement complete?

--

Go to Step 7

--

6
  1. Check the steering column tilt/telescoping module (TTM) connectors C2 and C3 for poor terminal contact.
  2. If OK, replace the TTM. Refer to Tilt/Telescoping Module Replacement .

Is the replacement complete?

--

Go to Step 7

--

7

  1. Turn the ignition switch OFF.
  2. Reconnect or install any connectors or components that were disconnected or removed.
  3. Turn the ignition switch ON.
  4. Clear any DTCs.
  5. Repeat the Diagnostic System Check. Refer to Tilt/Telescoping Steering Column Diagnostic System Check .

Is the Diagnostic System Check complete?

--

System OK

--