Toyota Venza manuals

Toyota Venza: System Voltage (P0560)

DESCRIPTION

The battery supplies electricity to the TCM even when the ignition switch is off. This power allows the TCM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, these memories are cleared and the TCM determines that there is a malfunction in the power supply circuit. When the engine is next started, the TCM will illuminate the MIL and set the DTC.

DTC No.

DTC Detection Condition

Trouble Area

P0560

Open in TCM back-up power source circuit.

DTC is detected for 3 sec. or more (1 trip detection logic).

  • Open in back-up power source circuit
  • SFI system
  • TCM

HINT:

If DTC P0560 is set, the TCM does not store other DTCs.

MONITOR STRATEGY

Related DTCs

P0560: TCM system voltage

Required Sensors/Components (Main)

TCM

Required Sensors/Components (Sub)

-

Frequency of Operation

Continuous

Duration

3 seconds

MIL Operation

Immediate (MIL illuminated after next engine start)

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs are not present:

None

TYPICAL MALFUNCTION THRESHOLDS

TCM power source

Less than 3.5 V

Stand-by RAM

Initialized

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

Perform the universal trip to clear permanent DTCs (See page ).


PROCEDURE

1.

CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / DTC.

(e) Read the DTCs using the Techstream.

Display (DTC Output)

Proceed to

No DTC

A

P0560 is output (engine control system)

B


B

GO TO DTC P0560 (ENGINE CONTROL SYSTEM / SFI SYSTEM)


A

2.

INSPECT TCM (POWER SOURCE, GROUND)

(a) Disconnect the TCM connector.


(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

B40-1 (BATT) - B40-8 (E1)

Always

11 to 14 V

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

B40-8 (E1) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to TCM)


OK

REPLACE TCM


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TCM - BATTERY, BODY GROUND)

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