For Malfunction a)

OVERALL FUNCTION CHECK
This procedure can be used for checking the overall Exhaust Gas Recirculation (EGR) function. During this check, a Diagnostic Trouble Code (DTC) might not be confirmed.

Before starting with the following procedure, check the engine coolant temperature of the freeze frame data with CONSULT or Generic Scan Tool (GST).

^ If the engine coolant temperature is higher than or equal to 71°C (160°F), perform only "For the malfunction a)".

^ If the engine coolant temperature is lower than 71°C (160°F), perform both "For the malfunction a)" and "For the malfunction b)".







For The Malfunction a)
1) Start engine and warm it up sufficiently.




2) Check the EGR valve lifting when revving from 2,000 rpm up to 4,000 rpm under no load.

EGR valve should lift up and down without sticking. If EGR valve does not lift up and down, try again with either of the following methods:

With Consult
^ Select "EGRC SOLENOID VALVE" in "ACTIVE TEST" mode with CONSULT and turn the solenoid valve "OFF"

Without Consult
^ Disconnect EGR valve & canister control solenoid valve harness connector.
(The DTC for EGR valve & canister control solenoid valve will be displayed, however, ignore it.)




3) Check voltage between EGR temperature sensor harness connector terminal "1" and ground at idle speed.

Less than 4.5 volts should exist.




4) Turn ignition switch "OFF".
Check harness continuity between EGR temperature sensor harness connector terminal "2" and ECM terminal "50".

Continuity should exist.

5) Perform "COMPONENTS INSPECTION", "EGR temperature sensor".