Loading ...
Loading ...
Loading ...
3 CHECK HEATED OXYGEN SENSOR 1 (FRONT) CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect corresponding heated oxygen sensor 1 (front) harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between ECM terminal and HO2S1 (front) terminal as follows.
Refer to Wiring Diagram.
SEF833Z
Continuity should exist.
5. Check harness continuity between ECM terminal or HO2S1 (front) terminal and ground as follows.
Refer to Wiring Diagram.
SEF834Z
Continuity should not exist.
6. Also check harness for short to power.
OK or NG
OK 䊳 GO TO 4.
NG 䊳 Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK FUEL PRESSURE
1. Release fuel pressure to zero.
Refer to EC-637.
2. Install fuel pressure gauge and check fuel pressure.
At idling:
When fuel pressure regulator valve vacuum hose is connected.
235 kPa (2.4 kg/cm
2
, 34 psi)
When fuel pressure regulator valve vacuum hose is disconnected.
294 kPa (3.0 kg/cm
2
, 43 psi)
OK or NG
OK 䊳 GO TO 6.
NG 䊳 GO TO 5.
DTC P0172 (RIGHT, -B1), P0175 (LEFT, -B2) FUEL INJECTION
SYSTEM FUNCTION (RICH)
VG33E
Diagnostic Procedure (Cont’d)
EC-898
Loading ...
Loading ...
Loading ...