Orlando

Driver Information Centre Switch Malfunction

The driver information centre switch is a multiplexed switch. Battery power is provided to the driver information centre switch via the instrument panel cluster. The driver information centre switch signal circuit is pulled up to battery voltage in the instrument panel cluster. The instrument cluster also provides the driver information centre switch with a low reference. The switch input to the instrument cluster is pulled low when a switch is activated. The driver information centre switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The instrument cluster monitors the driver information centre switch signal circuit to determine the driver information centre switch inputs. Each switch state – Menu, UP, DOWN – corresponds to a certain resistance value. The instrument cluster determines the switch pressed by the voltage drop across the resistors.

Schematic Reference

Instrument Cluster Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Driver Information Centre (DIC) Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Driver Information Centre Switch parameter, that when the S78 Indicator/Multifunction Switches Menu, UP, DOWN, SET/CLR are pressed and released the scan tool parameter toggles between Menu, Up, Down, Clear and Inactive.

1. Ignition OFF, disconnect the harness connector at the S78 Indicator/Multifunction Switch.
2. Ignition OFF for more than 60 s, test for less than 5 Ω between the low reference circuit terminal 6 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the P16 Instrument Cluster.

3. Ignition ON, verify the scan tool Driver Information Centre Switch parameter is Undefined.

⇒	If not Undefined, test the signal circuits terminal 5 and terminal 12 for a short to ground. If the circuit tests normal, replace the P16 Instrument Cluster

4. Ignition ON, install a 680 Ω resistance between the signal circuit terminal 12 and the low reference circuit terminal 6. Verify the scan tool Driver Information Centre Switch parameter is Up.

⇒	If not Up, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the P16 Instrument Cluster.

5. Ignition ON, install a 3 A fused jumper wire between the signal circuit terminal 5 and the low reference circuit terminal 6. Verify the scan tool Driver Information Centre Switch is Menu.

⇒	If not Menu, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the P16 Instrument Cluster.

6. If all circuits test normal, test or replace the S78 Indicator/Multifunction Switch.

Static Test

1. Ignition OFF, disconnect the harness connector at the S78 Indicator/Multifunction Switch.
2. Test for 8.5-9.1 kΩ between the signal terminal 12 and the low reference circuit terminal 6.

⇒	If not within the specified range, replace the S78 Indicator/Multifunction Switch.

3. Test for 550-650 Ω between the signal terminal 12 and the low reference circuit terminal 6 while pressing the Up switch.

⇒	If not within the specified value, replace the S78 Indicator/Multifunction Switch.

4. Test for 1.5-1.7 kΩ between the signal terminal 12 and the low reference circuit terminal 6 while pressing the Down switch.

⇒	If not within the specified value, replace the S78 Indicator/Multifunction Switch.

5. Test for 3.3-3.7 kΩ between the signal terminal 12 and the low reference circuit terminal 6 while pressing the Reset switch.

⇒	If not within the specified value, replace the S78 Indicator/Multifunction Switch.

6. Test for less than 5 Ω between the signal terminal 5 and the low reference circuit terminal 6 while pressing the Menu switch.

⇒	If greater than the specified value, replace the S78 Indicator/Multifunction Switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.