Toyota Camry (XV70): IG Power Supply Voltage (C1551)
DESCRIPTION
When a problem occurs in the power source circuit, the fail-safe function works to stop the power assist.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | Warning Indicate |
Return-to-normal Condition |
Note |
|---|---|---|---|---|---|---|
| C1551 |
IG Power Supply Voltage |
When the PIG power supply voltage is normal, the IG power supply voltage is 18.5 V or higher |
| EPS warning light: Comes on |
The ECU judges the system has returned to normal |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
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- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. | CHECK HARNESS AND CONNECTOR (BATTERY - RACK AND PINION POWER STEERING GEAR ASSEMBLY) |
(a) Disconnect the C71 rack and pinion power steering gear assembly connector.
|
*a | Front view of wire harness connector (to Rack and Pinion Power Steering Gear Assembly) |
- | - |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
C71-4 (IG) - Body ground |
Ignition switch ON |
Below 18.5 V |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. | CHECK FOR DTC |
(a) Clear the DTCs.
Chassis > EMPS > Clear DTCs(b) Check for DTCs.
Chassis > EMPS > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTC is output. | A |
|
DTC is not output. |
B |
| A | |
REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY
|
| B | |
USE SIMULATION METHOD TO CHECK |
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PIG Power Supply Voltage (C1552,C1554)
DESCRIPTION When a problem occurs in the PIG power source and power supply relay system, the fail-safe function works to stop the power assist.
DTC No. Detection Item
DTC Detection Cond
Error in Matching of ECUs (C1567)
DESCRIPTION The power steering ECU (rack and pinion power steering gear assembly) determines whether an incompatible ECM, main body ECU (multiplex network body ECU) or skid control ECU (brake actuator
Assist Map Number Un-Writing (C1581)
DESCRIPTION This DTC will be stored if the power steering ECU (rack and pinion power steering gear assembly) determines that the assist map is not written in the ECU.
DTC No. Detection Item
SEE MORE:
Replacement
REPLACEMENT CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during automatic transaxle fluid replacement are shown below. Necessary Procedures After Parts Removed/In
VSC OFF Switch Circuit
DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding this switch turns off TRAC and VSC operation. If TRAC and VSC operations are turned off, "
