Toyota Camry (XV70): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here .gif)
- *: w/ Smart Key System
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Horn System|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Horn does not sound |
HORN fuse | - |
|
HORN relay |
| |
|
Horn button assembly |
| |
|
Spiral cable sub-assembly |
| |
|
Instrument panel junction block assembly |
| |
|
Harness or connector |
- | |
|
Horn sounds all the time |
HORN relay |
|
|
Horn button assembly |
| |
|
Spiral cable sub-assembly |
| |
|
Instrument panel junction block assembly |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
Harness or connector |
- | |
| Low pitched horn operates but high pitched horn does not operate |
High pitched horn assembly |
|
|
Harness or connector |
- | |
| High pitched horn operates but low pitched horn does not operate |
Low pitched horn assembly |
|
|
Harness or connector |
- |
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST ACTIVE TEST HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive f
Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE
1. INSPECT HORN RELAY
*a Component without harness connected (HORN Relay)
(a) Measure the resistance according to the valu
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected
No Response from ID BOX (B2789)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more.
DTC No. Detection Item
DTC Detection Condition Trouble Area
B2789 No Response from ID BOX
N
