CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Ask the customer about the problems and the conditions at the time the malfunction occurred to make sure the problem symptom was not temporarily caused by radio waves in the surrounding environment.
HINT:
The rear view monitor display may be temporarily distorted due to radio waves around the vehicle.
Problem Symptom |
Cause |
---|---|
Both of the following conditions are met:
|
The display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver. |
|
3. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.
|
4. |
CHECK FOR DTC* |
(a) Check for DTCs and note any codes that are output.
Body Electrical > Navigation System > Trouble Codes(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(c) Recheck for DTCs. Try to reproduce the DTC by simulating the conditions indicated by the DTCs.
Body Electrical > Navigation System > Trouble Codes
Result |
Proceed to |
---|---|
No DTCs are output |
A |
DTCs are output |
B |
B |
GO TO STEP 10 |
|
5. |
PROBLEM SYMPTOM CONFIRMATION |
Result |
Proceed to |
---|---|
Symptom does not occur |
A |
Symptom occurs |
B |
B |
GO TO STEP 7 |
|
6. |
SYMPTOM SIMULATION |
Click here
|
7. |
CHECK IF SAME SYMPTOM APPEARS IN OTHER SYSTEM |
(a) Refer to Audio and Visual System*1
Click here
(b) Refer to Navigation System*2
Click here
Result |
Proceed to |
---|---|
Symptom does not appear |
A |
Symptom appears (w/o Navigation System) |
B |
Symptom appears (w/ Navigation System) |
C |
B |
GO TO AUDIO AND VISUAL SYSTEM |
C |
GO TO NAVIGATION SYSTEM |
|
8. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
Result |
Proceed to |
---|---|
Fault is not listed in Problem Symptoms Table |
A |
Fault is listed in Problem Symptoms Table |
B |
B |
GO TO STEP 10 |
|
9. |
PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM |
(a) Refer to Terminals of ECU.
Click here
|
10. |
ADJUST, REPAIR OR REPLACE |
|
11. |
CONFIRMATION TEST |
NEXT |
END |
Toyota CH-R Service Manual > Immobiliser System(w/ Smart Key System): Short to GND in Immobiliser System Power Source Circuit (B278A)
DESCRIPTION
When there is a short to GND in the power supply for the transponder key amplifier
of the engine switch, the certification ECU (smart key ECU assembly) stores this
DTC.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
...
Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Radio Receiver Power Source Circuit
DESCRIPTION
This is the power source circuit to operate the radio and display receiver assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
procedure.
PROCEDURE
1.
CHECK HARNES ...