DESCRIPTION
This circuit provides power to operate the clearance warning ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY POWER SOURCE) |
(a) Disconnect the D79 clearance warning ECU assembly connector.
(b) Measure the voltage according to the value(s) is the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D79-1 (IG) - Body ground |
Engine switch on (IG) |
11 to 14 V |
D79-1 (IG) - Body ground |
Engine switch off |
Below 1 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D79-30 (E) - Body ground |
Always |
Below 1 Ω |
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Inspection
INSPECTION
PROCEDURE
1. INSPECT PRELOAD
(a) Secure the steering column assembly in a vise.
Text in Illustration
*1
Service Nut
*2
Steering Wheel Assembly Set Nut
...
Horn Circuit
DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm
sounding state, the main body ECU (driver side junction block assembly) transmits
a signal to cause the horn to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
...
Tire Pressure Warning Light Circuit
DESCRIPTION
If the tire pressure warning ECU detects a malfunction, the tire pressure warning
light blinks for 1 minute then stays on and tire pressure monitor is canceled at
the same time. At this time, the ECU records a DTC in the memory.
Connecting te ...