DTC 1005

COMPONENT DESCRIPTION
The EGRC-solenoid valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the coil in the solenoid valve is energized. A plunger will then move to cut the vacuum signal (from the throttle body to the EGR valve).
When the ECM sends an OFF signal, the vacuum signal passes through the solenoid valve. The signal then reaches the EGR valve.




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured between each terminal and (43) (ECCS ground).




CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Specification data are reference values.




ON BOARD DIAGNOSIS LOGIC

OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the EGRC-solenoid valve circuit. During this check, a 1st trip DTC might not be confirmed.

With CONSULT
(1) Turn ignition switch "ON".




(2) Perform "EGRC SOL/V CIRCUIT" in "FUNCTION TEST" mode with CONSULT.

OR

With CONSULT
(1) Turn ignition switch "ON".




(2) Perform "EGRC SOLENOID VALVE" in "ACTIVE TEST" mode with CONSULT and check the operating sound, according to ON/OFF switching.

OR

NO TOOLS
(1) Start engine and warm it up sufficiently.
(2) Turn ignition switch "OFF" and wait at least 7 seconds.
(3) Start engine again.




(4) Check the voltage between ECM terminal (103) and ground at idle speed.

Voltage: 0.04 - 0.08V

(5) Check that the voltage changes to battery voltage and returns to 0.04 - 0.08V when the engine speed increases to about 2,500 rpm.

EC-EGRC/V-01 EGRC-Solenoid Valve (DTC P1400):

WIRING DIAGRAM




DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION
EGRC-Solenoid Valve




Check air passage continuity.

Condition / Air passage continuity between (A) and (B) / Air passage continuity between (A) and (C)
12V direct current supply between terminals (1) and (2) / Yes / No
No supply / No / Yes

If NG, replace solenoid valve.