Pinpoint Test AN: The Powertrain Malfunction (Wrench) Message Center Warning Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Test AN: The Powertrain Malfunction (Wrench) Message Center Warning Indicator Is Never/Always On (Hybrid)

Normal Operation

The Instrument Panel Cluster (IPC) receives the powertrain malfunction data from the PCM for the Electronic Throttle Control (ETC) status, the Transmission Control Module (TCM) for the transaxle status and the Battery Pack Sensor Module (BPSM) for the traction battery status over the High Speed Controller Area Network (HS-CAN) communication bus.

When a fault condition exists in the ETC (Electronic Throttle Control) system, the transaxle, or the traction battery system, the controlling module (PCM, BPSM (Battery Pack Sensor Module) or TCM (Transmission Control Module)) provides the IPC (Instrument Panel Cluster) with a message to turn the powertrain malfunction (wrench) message center warning indicator on.

If the ETC (Electronic Throttle Control) status is missing for less than 5 seconds, the powertrain malfunction (wrench) message center warning indicator remains in the last indication mode (on or off) based upon the last known good message received. If the ETC (Electronic Throttle Control) status is missing for greater than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0100:00 and defaults the powertrain malfunction (wrench) message center warning indicator on.

If the transaxle status is missing for less than 5 seconds, the powertrain malfunction (wrench) message center warning indicator remains in the last indication mode (on or off) based upon the last known good message received. If the transaxle status is missing for greater than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0101:00 and defaults the powertrain malfunction (wrench) message center warning indicator on.

If the traction battery status is missing for less than 5 seconds, the powertrain malfunction (wrench) message center warning indicator remains in the last indication mode (on or off) based upon the last known good message received. If the traction battery status is missing for greater than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0111:00 and defaults the powertrain malfunction (wrench) message center warning indicator on.

NOTE: If U0100:00 is set in the IPC (Instrument Panel Cluster) , other symptoms may also be present such as an inoperative speedometer, tachometer or temperature gauge.

This pinpoint test is intended to diagnose the following:

- ETC (Electronic Throttle Control) concern

- Transaxle concern

- Traction battery concern

- IPC (Instrument Panel Cluster)

PINPOINT TEST AN : THE POWERTRAIN MALFUNCTION (WRENCH) MESSAGE CENTER WARNING INDICATOR IS NEVER/ALWAYS ON (HYBRID)

AN1 CHECK THE MESSAGE CENTER OPERATION

- Close all doors and the luggage compartment lid.

- Ignition ON.

- Open the driver door while monitoring the message center displays.

Does the message center display the door ajar message center warning indicator along with the DRIVER DOOR AJAR text?

Yes
GO to AN2.

No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.

AN2 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded DTCs from the IPC (Instrument Panel Cluster) self-test.

Are any DTCs recorded?

Yes
REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes

No
GO to AN3.

AN3 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO (Key ON Engine OFF) SELF-TEST

- Check for recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.

Are any DTCs recorded?

Yes
DIAGNOSE all PCM DTCs first. REFER to Computers and Control Systems Information.

No
GO to AN4.

AN4 RETRIEVE THE RECORDED DTCs FROM THE TCM (Transmission Control Module) SELF-TEST

- Check for recorded TCM (Transmission Control Module) DTCs from the self-test.

Are any DTCs recorded?

Yes
DIAGNOSE all TCM (Transmission Control Module) DTCs first. REFER to Computers and Control Systems Information.

No
REPAIR all BPSM (Battery Pack Sensor Module) DTCs.