|
|
EC-234 [QG (WITH EURO-OBD)] DTC P0134 HO2S1 (M/T MODELS) Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- Diagnostic Procedure EBS00QKD 1. INSPECTION START 1. Turn ignition switch “OFF”. 2. Loosen and retighten engine ground screws. >> GO TO 2. 2. CHECK HO2S1 GROUND CIRCUIT FOR OPEN AND SHORT 1. Disconnect heated oxygen sensor 1 harness connector. 2. Disconnect ECM harness connector. 3. Check harness continuity between ECM terminal 74 and HO2S1 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 35 and HO2S1 terminal 2. 2. Check harness continuity between ECM terminal 35 or HO2S1 terminal 2 and ground. 3. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. TERMI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 35 W Heated oxygen sensor 1 [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. 0 - Approximately 1.0V 74 B Sensors' ground [Engine is running] ● Idle speed Approximately 0V MBIB0095E Continuity should exist. MBIB0091E Continuity should exist. Continuity should not exist. |