GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Blazer - 4WD 🢒 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

Did you review the driver information system operation and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms - Driver Information System

2

Verify that the driver information display module temperature display always reads one value.

Does the driver information system operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

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

--

Go to Step 4

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

4

Do the speedometer and the odometer operate correctly?

--

Go to Step 5

Go to Diagnostic System Check - Instrument Cluster

5
  1. Disconnect the ambient air temperature sensor connector.
  2. Using a J 39200 , measure the resistance across the ambient air temperature sensor terminals at two different temperatures. Refer to Circuit Testing in Wiring Systems.
  3. Compare the readings to the specified measurements. Refer to Outside Air Temperature Sensor Resistance .

Are the readings within specifications?

--

Go to Step 7

Go to Step 6

6

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

Is the repair complete?

--

Go to Step 10

--

7
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the driver information display module connector.
  3. Using the J 35616 , connect a J 39200 digital multimeter (DMM) to driver information display module connector cavity 9 (CKT 817 DK GRN/WHT) and cavity 8 (CKT 451 BLK/WHT). Connect the RED lead to cavity 9. Connect the BLK lead to cavity 8. Refer to Circuit Testing in Wiring Systems.
  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 9

Go to Step 8

8
  1. Repair the open or high resistance in CKT 817 (DK GRN/WHT) between the driver information display module connector terminal 9 and the SP200 terminal E. Refer to Wiring Repairs in Wiring Systems.
  2. Inspect the system.

Is the repair complete?

--

Go to Step 10

--

9

Replace the driver information display module. Refer to Driver Information Center Module Replacement .

Is the repair complete?

--

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3

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

Step

Action

Value(s)

Yes

No

1

Did you review the driver information system operation and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms - Driver Information System

2

Verify that the driver information display module Temperature display always reads one value.

Does the driver information system operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

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

--

Go to Step 4

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

4

Do the speedometer and the odometer operate correctly?

--

Go to Step 5

Go to Diagnostic System Check - Instrument Cluster

5
  1. Disconnect the ambient air temperature sensor connector.
  2. Using a J 39200 , measure the resistance across the ambient air temperature sensor terminals at two different temperatures. Refer to Circuit Testing in Wiring Systems.
  3. Compare the readings to the specified measurements. Refer to Outside Air Temperature Sensor Resistance .

Are the readings within specifications?

--

Go to Step 7

Go to Step 6

6

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

Is the repair complete?

--

Go to Step 10

--

7
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the driver information display module connector.
  3. Using the J 35616 , connect a J 39200 digital multimeter (DMM) to driver information display module connector cavity 7 (CKT 817 DK GRN/WHT) and cavity 6 (CKT 451 BLK/WHT). Connect the RED lead to cavity 7. Connect the BLK lead to cavity 6. Refer to Circuit Testing in Wiring Systems.
  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 9

Go to Step 8

8
  1. Repair the open or high resistance in CKT 817 (DK GRN/WHT) between the driver information display module connector terminal 7 and the SP200 terminal E. Refer to Wiring Repairs in Wiring Systems.
  2. Inspect the system.

Is the repair complete?

--

Go to Step 10

--

9

Replace the driver information display module. Refer to Driver Information Center Module Replacement .

Is the repair complete?

--

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3