DTC P0068 Map/MAF - Throttle Position Correlation: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.

Fig 1: MAP/MAF - Throttle Position - Wiring Diagram

G06647760

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK AIR INTAKE SYSTEM .	Are there holes, loose bolts or disconnection of hose on air intake system?	Repair the air intake system.	Go to step 2 .
2 CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR . Start the engine and warm up engine until coolant temperature is higher than 75°C (167°F). Place the shift lever in neutral position. Turn the A/C switch to OFF. Turn all the accessory switches to OFF. Read the data of intake manifold pressure sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.	Is the measured value 73.3 - 106.6 kPa (550 - 800 mmHg, 21.65 - 31.50 inHg) when the ignition is turned ON, and 20.0 - 46.7 kPa (150-350 mmHg, 5.91 -13.78 inHg) during idling?	Go to step 3 .	Replace the manifold absolute pressure sensor. Ref. to MANIFOLD ABSOLUTE PRESSURE SENSOR .
3 CHECK THROTTLE OPENING ANGLE . Read the data of throttle position signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.	Is the measured value less than 5% when throttle is fully closed?	Go to step 4 .	Replace the electronic throttle control. Ref. to THROTTLE BODY .
4 CHECK THROTTLE OPENING ANGLE .	Is the measured value 85% or more when throttle is fully open?	Replace the manifold absolute pressure sensor. Ref. to MANIFOLD ABSOLUTE PRESSURE SENSOR .	Replace the electronic throttle control. Ref. to THROTTLE BODY .