Toyota RAV4 manuals

Toyota Sienna Service Manual: Communication Error from VSC to ECM

DTC P1630 Communication Error from VSC to ECM

DTC U0122 Lost Communication with Vehicle Dynamics Control Module

DESCRIPTION

The skid control ECU sends signals such as cruise control cancel demand signals and brake operation demand (from ECM) response signals to the ECM when the dynamic laser cruise control system is in operation.

DTC No.

DTC Detection Condition

Trouble Area

P1630

While the dynamic laser cruise control is either preparing for operation or operating, if communication data from the skid control ECU is logically inconsistent for a certain amount of time, the ECM records this logical error code
  • Communication circuit
  •  ABS & traction actuator (Skid control ECU)
  •  ECM

U0122

While dynamic laser cruise control is either preparing for operation or operating, if communication data from the skid control ECU is invalid for a certain amount of time, the ECM records this communication cut off code
  • Communication circuit
  •  ABS & traction actuator (Skid control ECU)
  •  ECM

INSPECTION PROCEDURE

HINT: This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

1 CHECK CAN COMMUNICATION SYSTEM

Refer to HOW TO PROCEED WITH TROUBLESHOOTING

END

Distance Control ECU Malfunction
DTC P1617 Distance Control ECU Malfunction DESCRIPTION In the dynamic laser cruise control system, the ECM and the distance control ECU communicate with one another to control the system based on ...

Communication Error from ECM to VSC
DTC P1631 Communication Error from ECM to VSC DTC U0100 Lost Communication with ECM/PCM "A" DESCRIPTION The ECM sends signals such as A/T information signals, dynamic laser cruise contr ...

Other materials:

Reassembly
1. INSTALL IGNITION OR STARTER SWITCH ASSEMBLY (a) Install the ignition or starter switch assembly to the steering column bracket assembly UPR with the 2 screws. 2. INSTALL KEY INTER LOCK SOLENOID (a) Install the solenoid to the steering column bracket assembly with the 2 screws. 3. INSTALL ...

A/F sensor and ho2s monitors
(a) Preconditions The monitor will not run unless: 2 minutes or more have elapsed since the engine was started. The Engine Coolant Temperature (ECT) is 75°C (167°F) or more. Cumulative driving time at a vehicle speed of 30 mph (48 km/h) or more exceeds 6 minutes. Air-fuel ratio fe ...

Reassembly
1. INSTALL REAR SEAT STAY SUB-ASSEMBLY  Install the rear seat stay sub-assembly with the nut. Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf) 2. INSTALL NO. 2 SEAT CUSHION SPRING ASSEMBLY LH 3. INSTALL LOCUS CABLE LH  Install the locus cable LH with the nut. Torque: 5.5 N*m (56 kg ...

© 2011-2019 Copyright www.tsienna.net