DTC B3564 DIC Mode Switch Circuit Low. Pontiac Bonneville 2000

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2000 🢒 Bonneville 🢒 DTC 🢒 DTC B3564 DIC Mode Switch Circuit Low

Refer to

DIC Switch (U50)

Instrument Cluster and HUD Components
Driver Information Center (DIC) or Message Center Description
DIC Switch (U2F)
Systems Monitor
Handling ESD Sensitive Parts Notice
Serial Data Class 2
Wiper/Washer Switch and Fuse
Instrument Panel and Console Dimming
G104 and G105
G201 (1 of 3)
G201 (1 of 3)

The instrument panel cluster (IPC) contains switch circuits that allow certain functions to be performed when depressed. The IPC monitors these circuit voltage levels and detects when a certain button has been depressed by the voltage drop. If the voltage is not within a range for a pre determined amount of time, the IPC detects the malfunction and sets the DTC.

Conditions for Running the DTC

•	The IPC must be powered up

•	The IPC detects a single failure

Conditions for Setting the DTC

The IPC detects the mode switch input low (stuck or shorted to ground) for more than 15 seconds.

Action Taken When the DTC Sets

The mode switch will be disabled (ignored), therefore the IPC will not be capable of providing the correct status of the input when requested through the ALDL.

Conditions for Clearing the MIL/DTC

The IPC does not detect a failure during the diagnostic self test.

Diagnostic Aids

The IPC will store the code as current only as long as the failure exists. An intermittent failure will be stored as a history DTC.

Test Description

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

As the typical scan tool value is OFF, this step tests the instrument panel cluster for a short or a sticking remote switch.

Step	Action	Value(s)	Yes	No
1	Did you perform the Instrument Cluster Diagnostic System Check?	--	Go to Step 2	Go to Diagnostic System Check - Instrument Cluster
2	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Mode Switch parameter in the Instrument Panel Cluster data list. Does the scan tool display OFF?	--	Go to Step 3	Go to Step 4
3	Depress the MODE switch. With the scan tool, observe the Mode Switch parameter. Does the Mode Switch parameter change state?	--	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 4
4	Turn OFF the ignition. Disconnect the driver information center (DIC) switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Mode Switch parameter. Does the scan tool display OFF?	--	Go to Step 7	Go to Step 5
5	Notice: The circuit terminates at a flat wire connector. Use the J 42675 Flat Wire Probe Adapter Kit in order to avoid damage and properly test the circuit. Test the signal circuit of the MODE switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 10	Go to Step 6
6	Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 10	Go to Step 8
7	Inspect for poor connections at the harness connector of the DIC switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 10	Go to Step 9
8	Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement?	--	Go to Step 10	--
9	Replace the DIC switch. Refer to Driver Information Display Switch Replacement . Did you complete the replacement?	--	Go to Step 10	--
10	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	--	Go to Step 2	System OK