Toyota Venza: PIG Power Supply Voltage Malfunction (C1552)

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / PIG Power Supply Voltage Malfunction (C1552)

DESCRIPTION

When a problem occurs in the power steering system, the power source relay circuit is shut off to stop the power assist.

DTC No.	DTC Detection Condition	Trouble Area
C1552	PIG power source circuit malfunction inside ECU	PIG power source circuit Power steering ECU

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor zero point calibration (See page ).

Inspection the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.	READ VALUE USING TECHSTREAM (PIG POWER SUPPLY)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

(f) Select the items "PIG Power Supply" in the Data List and read the value displayed on the Techstream.

EMPS

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
PIG Power Supply	Power source voltage to active motor/ Min.: 0 V Max.: 20.1531 V	11 to 14 V	The engine is running and power steering is operating.

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

PIG Power Supply

Power source voltage to active motor/

Min.: 0 V

Max.: 20.1531 V

11 to 14 V

The engine is running and power steering is operating.

OK:

Normal condition value is displayed the Techstream.

REPLACE POWER STEERING ECU

2.	CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND)

(a) Disconnect the connector from the power steering ECU.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
D19-1 (PIG) - Body ground	Always	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
D19-2 (PGND) - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to Power Steering ECU)

REPLACE POWER STEERING ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

Assist Map Number Mismatch (C1582)

DESCRIPTION When an incorrect ECM or brake actuator assembly (skid control ECU) is installed after the assist map has been recorded in the power steering ECU, then DTC C1582 is stored because the ...

Assist Map Number Un-Writing (C1581)

DESCRIPTION The power steering ECU stores this DTC when it determines that the assist map is not written in the ECU. HINT: The assist map is data written in the power steering ECU to control the ...

Other materials about Toyota Venza:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE POSITION INDICATOR HOUSING SUB-ASSEMBLY (a) Remove the shift lever cap from the position indicator housing sub-assembly. (b) Disengage the 4 claws and remove the position indicator housing sub-assembly. ...

Registration
REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION HINT: The key has 2 codes: the key code (immobiliser code) and the wireless code. Both of these codes need to be registered. For the wireless code registration procedures, refer to Wireless Doo ...

Sliding Roof does not Move by Operating Sliding Roof Control Switch
DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) receives switch slide and tilt signals and drives its built-in motor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system ...