Driver Information Center Switch Malfunction
Diagnostic Instructions
Diagnostic Fault Information
Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Driver Information Center Switch Signal
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B3567 02
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B3567 04
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B3567 01
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-
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Driver Information Center Reset Switch Signal
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1
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1
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1
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-
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Low Reference
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-
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B3567 04
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-
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-
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1. Driver information center switch malfunction
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|
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Circuit/System Description
The driver information center switch is a multiplexed switch.
Battery power is provided to the driver information center switch
via the Instrument Panel Cluster. The driver information center
switch signal circuit is pulled up to battery voltage in the
Instrument Panel Cluster. The instrument cluster also provides the
driver information center switch with a low reference. The switch
input to the instrument cluster is pulled low when a switch is
activated. The driver information center switch is a momentary
contact switch that connects a series of resistors in a resistor
ladder format. The instrument cluster monitors the driver
information center switch signal circuit to determine the driver
information center 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.
Reference Information
Schematic Reference
Instrument Cluster Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Driver Information Center (DIC) Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Driver Information Center
Switch parameter, while pressing and releasing the S78 Turn
Signal/Multi-Function Switch Menu, UP, DOWN, and SET/CLR buttons.
The reading should toggle between Menu, Up, Down, Clear and
Inactive.
Circuit/System Testing
1. |
Ignition OFF, disconnect the
harness connector at the S78 Turn Signal/Multi-Function
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 Center Switch parameter is Inactive.
|
⇒ |
If not Inactive, 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 Center 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 Center 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 Turn Signal/Multi-Function Switch.
|
Component Testing
Static Test
1. |
Ignition OFF, disconnect the
harness connector at the S78 Turn Signal/Multi-Function
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
Turn Signal/Multi-Function 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
Turn Signal/Multi-Function 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
Turn Signal/Multi-Function 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
Turn Signal/Multi-Function 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 Turn Signal/Multi-Function Switch. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
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