GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Jimmy - 2WD 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Driver Information Center (DIC) Temperature Display Always Reads One Value

Driver Information Center (DIC) Temperature Display Always Reads One Value w/ Trip Computer

Step

Action

Value(s)

Yes

No

1

Was the Driver Information Center System Check performed?

--

Go to Step 2

Go to Driver Information System Check

2

Did you test the vehicle for diagnostic trouble codes (DTCs)?

--

Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 2.2L or Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 4.3L

3

Do the speedometer and the odometer operate correctly?

--

Go to Step 4

Go to Diagnostic System Check - Instrument Cluster

4
  1. Disconnect the outside ambient temperature display sensor connector.
  2. Connect a J 39200 .
  3. Measure the resistance across the ambient air temperature sensor terminals at two different temperatures.
  4. Compare the readings to the specified measurements. Refer to Outside Air Temperature Sensor Resistance .

Are the readings within specifications?

--

Go to Step 6

Go to Step 5

5

Replace the outside ambient temperature display sensor. Refer to Ambient Air Temperature Gage Sensor Replacement

Is the repair complete?

--

Go to Driver Information System Check

--

6
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the DIC connector.
  3. Using the J 35616 , connect a J 39200 digital multimeter (DMM) to DIC connector cavity 9 (CKT 817) and cavity 8 (CKT 451). Connect the RED lead to cavity 9. Connect the BLK lead to cavity 8.
  4. Set the J 39200 DMM to measure DC volts.
  5. Push the Hz button once on the J 39200 DMM. Hz should be displayed on the right side of the screen.
  6. Start the vehicle.
  7. Depress the brake pedal.
  8. Place the vehicle in a forward gear.
  9. Release the brake.
  10. Accelerate in order to maintain a constant speed of 25 mph.

(MPH x 1.111 = Hz)

Does the J 39200 DMM show a value within the specified range?

25-30 Hz

Go to Step 8

Go to Step 7

7
  1. Repair the open or high resistance in CKT 817 between the DIC connector terminal 9 and the SP200 terminal E. Refer to Wiring Repairs
  2. Inspect the system.

Is the repair complete?

--

Go to Driver Information System Check

--

8

Replace the DIC. Refer to Driver Information Center Module Replacement

Is the repair complete?

--

Go to Driver Information System Check

--

Driver Information Center (DIC) Temperature Display Always Reads One Value w/o Trip Computer

Step

Action

Value(s)

Yes

No

1

Was the Driver Information Center System Check performed?

--

Go to Step 2

Go to Driver Information System Check

2

Did you test the vehicle for diagnostic trouble codes (DTCs)?

--

Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 2.2L or Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 4.3L

3

Do the speedometer and the odometer operate correctly?

--

Go to Step 4

Go to Diagnostic System Check - Instrument Cluster

4
  1. Disconnect the outside ambient temperature display sensor connector.
  2. Connect a J 39200 .
  3. Measure the resistance across the ambient air temperature sensor terminals at two different temperatures.
  4. Compare the readings to the specified measurements. Refer to Outside Air Temperature Sensor Resistance .

Are the readings within specifications?

--

Go to Step 6

Go to Step 5

5

Replace the outside ambient temperature display sensor. Refer to Ambient Air Temperature Gage Sensor Replacement .

Is the repair complete?

--

Go to Driver Information System Check

--

6
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the DIC connector.
  3. Using the J 35616 , connect a J 39200 digital multimeter (DMM) to DIC connector cavity 7 (CKT 817) and cavity 6 (CKT 451). Connect the RED lead to cavity 7. Connect the BLK lead to cavity 6.
  4. Set the J 39200 DMM to measure DC volts.
  5. Push the Hz button once on the J 39200 DMM. Hz should be displayed on the right side of the screen.
  6. Start the vehicle.
  7. Depress the brake pedal.
  8. Place the vehicle in a forward gear.
  9. Release the brake.
  10. Accelerate in order to maintain a constant speed of 25 mph.

(MPH x 1.111 = Hz)

Does the J 39200 DMM show a value within the specified range?

25-30 Hz

Go to Step 8

Go to Step 7

7
  1. Repair the open or high resistance in CKT 817 between the DIC connector terminal 7 and the SP200 terminal E. Refer to Wiring Repairs
  2. Inspect the system.

Is the repair complete?

--

Go to Driver Information System Check

--

8

Replace the DIC. Refer to Driver Information Center Module Replacement

Is the repair complete?

--

Go to Driver Information System Check

--