CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
What |
Vehicle model, system name |
When |
Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time |
Where |
Whether the problem occurs at a specific location |
Under what conditions? |
Whether the doors were locked or unlocked, whether the engine switch was on (IG), whether the engine was running |
How did it happen? |
Problem symptoms* |
If the symptoms occurred immediately after purchase or only recently.
If the symptoms occurred even when the electrical key transmitter sub-assembly was near the vehicle (electrical key antenna).
If the electrical key transmitter sub-assembly is being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc.
The transmitter battery can be checked using the "Key Low Battery" item in the Data List.
Click here
|
3. |
PRE-CHECK |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
|
4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
Result |
Proceed to |
---|---|
CAN DTCs are not output |
A |
CAN DTCs are output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)
|
|
5. |
INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
Result |
Proceed to |
---|---|
LIN DTCs are not output |
A |
LIN DTCs are output |
B |
B | ![]() |
GO TO LIN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
6. |
CHECK FOR DTC* |
(a) Check for DTCs and make a note of any codes that are output.
Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Body Electrical > Starting Control > Trouble Codes Powertrain > Engine and ECT > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are not output |
A |
Steering lock system DTCs are output |
B |
Immobiliser system (w/ Smart Key System) DTCs are output |
C |
Smart key system (for Entry Function) DTCs are output |
D |
Smart key system (for Start Function) DTCs are output |
E |
B | ![]() |
GO TO STEERING LOCK SYSTEM |
C | ![]() |
GO TO IMMOBILISER SYSTEM |
D | ![]() |
GO TO SMART KEY SYSTEM (for Entry Function)
|
E | ![]() |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
7. |
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 9 |
|
8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check
Click here
(b) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
|
9. |
REPAIR OR REPLACE |
|
10. |
CHECK FOR DTC* |
(a) Clear the DTCs.
Body Electrical > Power Source Control > Clear DTCs Body Electrical > Smart Key > Clear DTCs Body Electrical > Starting Control > Clear DTCs Powertrain > Engine and ECT > Clear DTCs(b) Check for DTCs.
Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Body Electrical > Starting Control > Trouble Codes Powertrain > Engine and ECT > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are not output |
A |
DTCs are output |
B |
A | ![]() |
END |
B | ![]() |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
Toyota CH-R Service Manual > Tire Pressure Warning System: Initialization not Completed (C2177/77)
DESCRIPTION
Initialization is necessary if one of the following occurs:
The tire pressure warning ECU and receiver is replaced.
A tire pressure warning valve and transmitter is replaced.
Tires with different standard tire pressures are installed.
The tires are rotated.
A new ...
Toyota CH-R Service Manual > Can Communication System: Open in One Side of Bus 4 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...