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 |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (PIG POWER SUPPLY) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Start the engine.
(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. |
OK:
Normal condition value is displayed the Techstream.
OK | ![]() |
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 |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D19-2 (PGND) - Body ground |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Power Steering ECU) |
OK | ![]() |
REPLACE POWER STEERING ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Operation Check
OPERATION CHECK
1. CHECK POWER DOOR LOCK CONTROL OPERATION
NOTICE:
The following procedure is based on the assumption that the functions have not
been customized using the Techstream.
(a) Check basic functions.
(1) Check that all doors lock when the loc ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the LH side and RH side.
The following procedure is for the LH side.
If the sensor rotor needs to be replaced, replace it together with the
front drive shaft assembly. ...
Short in Curtain Shield Squib RH Circuit (B1830/57-B1833/57)
DESCRIPTION
The curtain shield squib RH circuit consists of the center airbag sensor assembly
and curtain shield airbag assembly RH.
The center airbag sensor assembly uses this circuit to deploy the airbag when
deployment conditions are met.
These DTCs ...