P169D
DTC P169D
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 P169D 00
- Fuel Fill Door Open Request Switch Wake-Up Circuit Performance
Diagnostic Fault Information
Circuit/System Description
The hybrid powertrain control module 2 monitors the voltage values of the fuel door wake-up signal circuit and the fuel door request signal circuit. When the refuel request switch is pressed, the switch contact closes and provides B+ voltage to the two signal circuits. The hybrid powertrain control module 2 detects the voltage on the signal circuits and upon receipt of a fuel door lock switch lock or unlock signal, will switch the fuel filler door latch actuator lock control circuit to B+ voltage. The opposing side of the fuel filler door latch actuator unlock control is connected to ground provided by the hybrid powertrain control module 2 through the other control circuit and will lock or unlock as commanded.
Conditions for Running the DTC
Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
The hybrid powertrain control module 2 detects a fault in the fuel fill door open request switch wake-up circuit.
Action Taken When the DTC Sets
The fuel door latch will malfunction and the fuel filler door may not be able to be opened.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will become a history DTC.
* A history DTC will clear after 50 ignition cycles
Reference Information
Schematic Reference
Release Systems Schematics (Fuel Door) Release Systems Schematics (Fuel Door)Release Systems Schematics (Liftgate) Release Systems Schematics (Liftgate)
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1 A4
Description and Operation
Fuel Fill Door Description and Operation Fuel Fill Door
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
Circuit/System Verification
Ignition ON, observe the scan tool Refuel System Request parameter while pressing and releasing the S117 refuel request switch. The value should change between Active and Inactive each time the switch is pressed and released.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the S117 refuel request switch.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool Refuel System Request parameter is Inactive.
• If not the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
4. Install a 2 A fused jumper wire between the signal circuit terminal 2 and the B+ circuit terminal 1. Verify the scan tool Refuel System Request parameter is Active.
• If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
5. If all circuits test normal, test or replace the S117 refuel request switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the S117 refuel request switch.
2. Test for infinite resistance between the signal terminal 1 and the B+ terminal 2 with the switch in the open position.
• If not the specified value, replace the S117 refuel request switch.
3. Test for less than 2 ohm between the signal terminal 1 and the B+ terminal 2 with the switch in the closed position.
• If greater than the specified range, replace the S117 refuel request switch.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Fuel Tank Filler Door Lock Release Switch Replacement Fuel Tank Filler Door Lock Release Switch Replacement
* Control Module References Control Module References for the hybrid powertrain control module 2 replacement, programming and setup