B3619
DTC B3619
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC B3619 02
-
Head-Up Display Change Page Switch Circuit Short to Ground
DTC B3619 05
-
Head-Up Display Change Page Switch Circuit High Voltage/Open
DTC B3619 61
-
Head-Up Display Change Page Switch Circuit Stuck
Diagnostic Fault Information
Circuit/System Description
The head-up display switch is a multiplexed switch. The head-up display provides the head-up display switch with a low reference. The switch input to the head-up display is pulled low when a switch is activated. The head-up display switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The head-up display determines the switch pressed by the voltage drop across the resistors. Each switch state PAGE, UP, DOWN corresponds to a certain resistance value.
Conditions for Running the DTC
* The ignition is in OFF, ACCESSORY or RUN position.
* The system voltage is between 9-16 V.
Conditions for Setting the DTC
B3619 02
The head-up display detects that the head-up display switch signal circuit is less than 900 mV.
B3619 05
The head-up display detects that the head-up display switch signal circuit is greater than 4.3 V.
B3619 61
The head-up display detects that the head-up display switch sticks.
Action Taken When the DTC Sets
The head-up display ignores the head-up display switch inputs.
Conditions for Clearing the DTC
The DTC will become history if the head-up display no longer detects a malfunction.
Reference Information
Schematic Reference
Head-Up Display Schematics Head-Up Display Schematics
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
Head-Up Display Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Special Tools
J-33431-C - Instrument Panel Tester
Circuit/System Verification
1. Ignition ON, observe the scan tool Adjust Display Up Switch parameter, that when the S27 Head-Up Display Switch Up is pressed and released the scan tool parameter toggles between Active and Inactive.
2. Observe the scan tool Adjust Display Down Switch parameter, that when the S27 Head-Up Display Switch Down is pressed and released the scan tool parameter toggles between Active and Inactive.
3. Observe the scan tool Page Switch parameter, that when the S27 Head-Up Display Switch Page is pressed and released the scan tool parameter toggles between Active and Inactive.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the S27 Head-Up Display Switch.
2. Test for less than 30 ohms between the low reference circuit terminal 1 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 P29 Head-Up Display.
3. Ignition ON, connect the J-33431-C - instrument panel tester or a similar variable resistance tool and dial in the following resistance values while observing the corresponding scan tool parameter change from Inactive to Active:
* 604 ohms - Page Switch parameter
* 1624 ohms - Adjust Display Up Switch parameter
* 3534 ohms - Adjust Display Down Switch parameter
• If any of the parameters do not change from Inactive to Active, test the signal circuit terminal 6 for a short to voltage, open/high resistance, or a short to ground. If all circuits test normal, replace the P29 head-up display module.
4. If all circuits test normal, test or replace the S27 head-up display switch.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector at the S27 Head-Up Display Switch.
2. Test for 8.8-9.3k ohms between the signal terminal 6 and the low reference circuit terminal 1.
• If not within the specified range, replace the S27 Head-Up Display Switch.
3. Test for 550-650 ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Page switch.
• If not within the specified value, replace the S27 Head-Up Display Switch.
4. Test for 1.5-1.7k ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Up switch.
• If not within the specified value, replace the S27 Head-Up Display Switch.
5. Test for 3.3-3.7k ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Down switch.
• If not within the specified value, replace the S27 Head-Up Display Switch.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Head-Up Display Replacement Head-Up Display Replacement
* Head-Up Display Dimmer Switch Replacement Head-Up Display Dimmer Switch Replacement
* Control Module References Control Module References for instrument cluster replacement, programming and setup