DESCRIPTION
The power steering ECU assembly distinguishes the ignition switch status as ON or off through the IG power source circuit.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1551 |
IG Power Supply Voltage |
Open or short in IG power source circuit with power switch on (IG) |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch is turned ON again |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER STEERING ECU ASSEMBLY) |
(a) Disconnect the F68 and F23 power steering ECU assembly connectors. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F23-1 (IG) - Body ground |
Ignition switch ON |
8 to 16 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F68-2 (PGND) - Body ground |
Always |
Below 1 Ω |
OK |
REPLACE POWER STEERING ECU ASSEMBLY |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Toyota CH-R Service Manual > Back Door: Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE PACKAGE TRAY TRIM PANEL ASSEMBLY (w/ Package Tray Trim)
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2. REMOVE TONNEAU COVER ASSEMBLY (w/ Tonneau Cover)
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3. REMOVE BACK DOOR TRIM UPPER PANEL ASSEMBLY
(a) Disengage the claws and clips to remove the back door trim upp ...
Toyota CH-R Service Manual > Theft Deterrent System: Security Horn Circuit
DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm
sounding state, the main body ECU (multiplex network body ECU) transmits a signal
to cause the security horn assembly to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NO ...