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Home >> Nissan-Datsun >> 1994 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - Tests W/Codes - 1.6L) >> Diagnostic Trouble Code (DTC) Tests >> DTC 32: EGR Function
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DTC 32: EGR Function

WARNING: This page is about a different variant/trim than selected.
  1. Check Vacuum Source To EGR Valve  - Start engine and warm to operating temperature. Disconnect hose from EGR valve and check vacuum. Vacuum should not be present. Raise engine speed to about 2000 RPM and check vacuum. Vacuum should be present. If vacuum is not as specified, go to next step. If vacuum is as specified, inspect EGR valve and EGRC-BPT valve. See SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE section. Repair or replace as necessary and perform FINAL CHECK  in this article.
  2. Check Control Function  - Start engine. Connect voltmeter between ECM terminal No. 105 and ground. See Figure and Fig 2 . At 2000 RPM, battery voltage should be present. At 4000 RPM, .6-.8 volt should be present. If voltage is not as specified, go to next step. If voltage is as specified, inspect vacuum hose for clogging, cracks or bad connection. Repair vacuum hose as necessary.
  3. Check Output Signal Circuit  - Turn engine off. Leave ECM disconnected. Disconnect EGR and canister control solenoid valve wiring harness connector. See Fig 1 . Check continuity between ECM terminal No. 105 (Red/Blue wire) and ground. See Figure and Fig 3 . Check continuity between EGR and canister control solenoid valve harness connector terminal "a" (Red/Blue wire) and ground. See Fig 3 . If continuity is present, repair wiring harness or connectors as necessary. If continuity is not present, go to next step.
  4. Check Component  - Measure resistance of EGR temperature sensor. Inspect EGR and canister control solenoid valve. See SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE section. Replace EGR and canister control solenoid valve and/or EGR temperature sensor if necessary and perform FINAL CHECK  in this article If components are okay, repair ECM pin terminals and/or connector terminals.
  5. Check Component Using Consult Tester (J-38465)  - Turn ignition off and connect Consult tester. Connect ECM harness connector and EGR and canister control solenoid valve harness connector. Turn ignition on. Perform EGRC SOL/V CIRCUIT in FUNCTION TEST mode. Turn EGR and canister control solenoid valve on and off using Consult tester in ACTIVE TEST mode. Replace EGR and canister control solenoid valve if operating sounds are not heard. Perform FINAL CHECK  in this article.
Fig 1: Locating EGR & Canister Control Solenoid Valve Harness Conn. (Sentra)
G93B80904Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: DTC 32, Checking Control Function (Sentra)
G93C80905Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: DTC 32, Checking Output Signal Circuit (Sentra)
G93D80906Courtesy of NISSAN MOTOR CO., U.S.A.
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