P1630

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1630: Communication Error from VSC to ECM
P1630 - Communication Error from VSC to ECM

DESCRIPTION

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





INSPECTION PROCEDURE

NOTICE:
When the ECM is replaced with a new one, initialization must be performed Programming and Relearning.

PROCEDURE

1. REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU)

(a) Replace the master cylinder solenoid (skid control ECU) Disassembly.

NEXT -- Continue to next step.

2. CHECK FOR DTC

(a) Clear the DTCs Dynamic Radar Cruise Control System.

(b) Perform the following to make sure the DTC detection conditions are met.

HINT
If the detection conditions are not met, the system cannot detect the malfunction.

(1) Drive the vehicle at a speed of 50 km/h (30 mph) or more.

(2) Turn the cruise control switch on.

(c) Check for DTCs Dynamic Radar Cruise Control System.

OK:

DTC P1630 is not output.

NG -- REPLACE ECM Removal

OK -- END (MASTER CYLINDER SOLENOID [SKID CONTROL ECU] IS DEFECTIVE)