CAUTION / NOTICE / HINT
PRECAUTIONS WHEN TROUBLESHOOTING
NOTICE:
HINT:
*: Use the Techstream.
PROCEDURE
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer and confirm the problem.
|
3. |
CHECK BATTERY |
Standard Voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
4. |
CHECK AND CLEAR DTCS* |
HINT:
|
5. |
CHECK DLC3 BRANCH WIRE AND CAN NO. 1 BUS MAIN WIRE (CANH - CANL) |
NOTICE:
HINT:
(a) Turn the ignition switch off. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
D1-6 (CANH) - D1-14 (CANL) |
Ignition switch off |
54 to 69 Ω |
*1 |
DLC3 |
Result |
Proceed to |
---|---|
OK |
A |
NG (70 Ω or higher) |
B |
NG (Below 54 Ω) |
C |
B | ![]() |
GO TO OPEN IN CAN MAIN BUS WIRE |
C | ![]() |
GO TO SHORT IN CAN BUS LINES |
|
6. |
CHECK FOR SHORT TO GND IN CAN NO. 1 BUS (CANH, CANL - CG) |
(a) Turn the ignition switch off. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
D1-6 (CANH) - D1-4 (CG) |
Ignition switch off |
200 Ω or higher |
D1-14 (CANL) - D1-4 (CG) |
Ignition switch off |
200 Ω or higher |
*1 |
DLC3 |
NG | ![]() |
GO TO SHORT TO GND IN CAN BUS LINE |
|
7. |
CHECK FOR SHORT TO +B IN CAN NO. 1 BUS (CANH, CANL - BAT) |
(a) Disconnect the cable from the negative (-) battery terminal. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D1-6 (CANH) - D1-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher |
D1-14 (CANL) - D1-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher |
*1 |
DLC3 |
NG | ![]() |
GO TO SHORT TO +B IN BUS 2 LINE |
|
8. |
CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT USE CAN COMMUNICATION |
(a) Based on the vehicle equipment and specifications, confirm the systems that
use CAN communication (See page ).
|
9. |
CHECK ECUS CONNECTED TO CAN BUS* |
(a) Select "CAN Bus Check" from the screen on the Techstream (See page
).
(b) Observe the screen for approximately 1 minute to check the ECUs and sensors displayed on the screen.
Result |
Result |
---|---|
All ECUs and sensors connected to the CAN communication system are displayed on the screen. (CAN bus circuit is currently normal.) |
A |
(Open or short in CAN MS bus main wires.) |
B*1 |
All ECUs connected to the CAN MS bus are not displayed on the screen. (Open in main body ECU branch wire or main body ECU malfunction.) |
C |
(Open or short in power management bus main wires.) |
D*1 |
(Open or short in power management bus main wires.) |
E*1 |
All ECUs connected to the CAN No. 2 bus and power management bus are not displayed on the screen. (Open in power management control ECU branch wires or power management control ECU malfunction.) |
F |
One of the ECUs and sensors connected to the CAN communication system is not displayed on the screen. (Open in ECU or sensor branch wires, or communication interrupted.) |
G |
Some ECUs and sensors repeatedly appear and disappear on the screen during this check. (Open in one side of ECU or sensor branch wires.) |
H |
NOTICE:
HINT:
B*1 | ![]() |
GO TO U1002 (MS BUS) |
C | ![]() |
GO TO MAIN BODY ECU COMMUNICATION STOP MODE |
D*1 | ![]() |
GO TO U1002 (CAN NO. 2 BUS) |
E*1 | ![]() |
GO TO U1002 (POWER MANAGEMENT BUS) |
F | ![]() |
GO TO POWER MANAGEMENT CONTROL ECU COMMUNICATION STOP MODE |
G | ![]() |
GO TO COMMUNICATION STOP MODE TABLE |
H | ![]() |
GO TO OPEN IN ONE SIDE OF CAN BRANCH LINE |
|
10. |
RECHECK DTC |
HINT:
Result |
Result |
---|---|
Communication error DTCs other than the codes output from the main body ECU and/or power management control ECU is output. (A malfunction occurred in the CAN No. 1 bus.) |
A |
The main body ECU outputs DTC. (A malfunction occurred in the CAN MS bus.) |
B |
The power management control ECU (PM1 Gateway) outputs DTC. (A malfunction occurred in the CAN No. 2 bus.) |
C |
The power management control ECU (PM2 Gateway) outputs DTC. (A malfunction occurred in the power management bus.) |
D |
B | ![]() |
GO TO U1002 (MS BUS) |
C | ![]() |
GO TO U1002 (CAN NO. 2 BUS) |
D | ![]() |
GO TO U1002 (POWER MANAGEMENT BUS) |
|
11. |
DTC COMBINATION TABLE |
(a) Confirm trouble according to the combination of output DTCs regarding the CAN communication system (See page
Click here
HINT:
Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on "CAN Bus Check" of the Techstream.
|
12. |
CIRCUIT INSPECTION |
|
13. |
IDENTIFICATION OF PROBLEM |
|
14. |
REPAIR OR REPLACEMENT |
|
15. |
CONFIRMATION TEST* |
NEXT | ![]() |
END |
Vehicle Speed Sensor "A" Intermittent / Erratic / High (P0503)
DESCRIPTION
If a malfunction (a rapid change in vehicle speed) in the vehicle speed signal
being output from the skid control ECU is detected while the cruise control is in
operation, the ECM determines that there is a momentary interruption or noise, and ...
Skid Control ECU Malfunction (C1300/62)
DESCRIPTION
The skid control ECU outputs this DTC, if malfunctions are found in the circuit
inside the ECU by self diagnosis.
DTC Code
DTC Detection Condition
Trouble Area
C1300/62
Internal failu ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Monitor the ECU data by following the prompts on the Techstream screen.
HINT:
The Techstream has a "Snapshot" function which records the monitored data. Refe ...