P1A60
DTC P1A60
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 P1A60
- Battery Energy Control Module Ignition Accessory Switch Circuit Low Voltage
Diagnostic Fault Information
Circuit/System Description
The hybrid powertrain control module 2 sends the serial data wake-up power mode status in a serial data message to the battery energy control module. The hybrid powertrain control module 2 also powers up the serial data wake-up circuit to the battery energy control module when the vehicle power mode is Vehicle ON or Vehicle in Service Mode.
Conditions for Running the DTC
* Vehicle power mode is Vehicle ON or Vehicle in Service Mode
* Battery energy control module is awake
* System voltage greater than 9 V
Conditions for Setting the DTC
Ignition input is active, and 500 ms after the ignition input transitions high, a voltage below 5 V is detected 3 consecutive times
Action Taken When the DTC Sets
DTC P1A60 is a type B DTC.
Conditions for Clearing the DTC
DTC P1A60 is a type B DTC.
Diagnostic Aids
A short to voltage in the serial data wake-up circuit will keep the vehicle bus awake, which can drain the vehicle's battery.
Reference Information
Schematic Reference
Data Communication Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation
Power Mode Description and Operation Power Mode
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
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Programming and Relearning for scan tool information
Circuit/System Testing
Danger:
High voltage enabling and disabling shall be only performed by High Voltage Qualified Technicians. The procedures for high voltage enabling/disabling can be found in the service instructions and must be strictly followed at all times. The usage of the Protocol High Voltage Disabling / Enabling is mandatory. The High Voltage Qualified Technician is responsible for the adherence to the manufacturer's service instructions as well as current national legal regulations.
Failure to follow the procedures exactly as written may result in serious injury or death.
Questions regarding training can be answered by your national training centre.
Danger:
Any hybrid/EV battery pack replacement shall be performed by High Voltage Qualified Technicians only. The replacement procedure can be found in the service instruction and must be strictly followed at all times. The High Voltage Qualified Technician is responsible for adherence to the manufacturer's service instructions as well as current national legal regulations. If the hybrid/EV battery pack needs to be replaced contact the Technical Assistance Centre for further instructions prior removal of the battery pack.
1. Perform the High Voltage Disabling procedure before proceeding with this diagnostic. Refer to High Voltage Disabling High Voltage Disabling.
2. Reconnect the 12 V battery.
3. Vehicle OFF, disconnect the X2 harness connector at the A4 hybrid battery pack.
4. Connect a test lamp between the serial data wake-up circuit terminal 3 and ground.
5. Verify the test lamp turns ON and OFF when cycling the S83 vehicle ON/OFF switch between Vehicle in Service Mode and Vehicle OFF.
• If the test lamp is always OFF
1. Vehicle OFF.
2. Test for infinite resistance between the serial data wake-up circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance.
3. Test for less than 2 ohms in the serial data wake-up circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K114B hybrid powertrain control module 2.
• If the test lamp is always ON
1. Vehicle OFF.
2. Test for less than 1 V between the ignition circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K114B hybrid powertrain control module 2.
• If the test lamp turns ON and OFF
6. Test or replace the K16 battery energy control module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic repair.
Control Module References Programming and Relearning for the appropriate control module replacement, programming and setup