Thursday, July 25, 2013

Hyundai Santa Fe GLS 3.5L, V6, MFI, DOHC, Eng Version N/R, Bosch, 3500 CC

Hyundai Santa Fe GLS 3.5L, V6, MFI, DOHC, Eng Version N/R, Bosch, 3500 CC

Customer Concern:  The customer stated that the vehicle would not accelerate. Road tested the vehicle and it runs and drives fine. There is an Accelerator Pedal Position (APP) sensor 2 circuit code P2127.

Tests:  
1. Locate the APS sensor, located under the hood by the brake booster, and verify there is a good connection and 5-volts on the Green wire and the Red/Orange wire. Next, verify that the grounds are good on the Brown and Black/White wire. If the 5-volts and ground are good, then back probe the Pink wire for APS #2 and the White wire for APS #1 and both sensors should sweep together from about 0.5 volt to about 5 volts. Use a scope, if necessary, to see the signal drop out. If the signal drops out, replace the sensor.

2. If the signal is good then check the signal at the Engine Control Module (ECM) and look for a harness or a connection issue.

Potential Causes:   Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position (APP) Sensor Circuit
 
Confirmed Fix:  Replaced Accelerator Pedal Position (APP) Sensor


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