LS 460 AWD V8-4.6L (1UR-FSE) (2009)
B -- Go to step 8
A -- Continue to next step.
7. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Data List/Active Test See: Scan Tool Testing and Procedures
(b) Terminals of ECU See: Pinout Values and Diagnostic Parameters/LIN Communication System
NEXT -- Continue to next step.
8. ADJUST, REPAIR OR REPLACE
NEXT -- END
How to Proceed With Troubleshooting
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING
HOW TO PROCEED WITH TROUBLESHOOTING
Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt
pretensioner activation.
NOTICE:
-
DTCs for the CAN communication system are as follows: U0073, U0100, U0101, U0122, U0123, U0124, U0126, U0127, U0128, U0129,
U0130, U0131, U0132, U0140, U0141, U0142, U0148, U0151, U0155, U0164, U0182, U0199, U0200, U0201, U0202, U0208, U0209,
U0210, U0230, U0235, U0243, U0327, U1000, U1002, U1004, U1005, U1100, U1101, U1104, U1105, U1106, U1110, U1111, U1112,
U1113, U1114, U1115, U1119, U1121, B2427, B2621, and B2624
-
Refer to the troubleshooting procedures of each system if DTCs regarding the CAN communication system are not output.
-
Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the engine switch, any switches or doors. If
doors need to be opened in order to check connectors, open the doors and leave them open.
-
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and
settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery
terminal.
-
When disconnecting the cable, some systems need to be initialized after the cable is reconnected See: Testing and
Inspection/Programming and Relearning/Repair Instruction - Initialization.
HINT:
-
Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes
resistance variation.
-
*: Use the Techstream.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
3. CHECK FOR DTC (ELECTRIC POWER CONTROL SYSTEM)*
(a) Using the Techstream, check if the electric power control system is functioning normally.
Result
B -- Go to ELECTRIC POWER CONTROL SYSTEM