Signal Circuit Inspection

1. IG "OFF"
2. Disconnect PCM connector and ABS or EPS control module connector.
3. Measure resistance between terminal 52 of PCM harness connector and chassis ground.
   Fig 1: Measuring Resistance Between Terminal 52 Of PCM Harness Connector And Chassis Ground

   Courtesy of KIA MOTORS AMERICA, INC.

   Specification: Infinite

4. Is the measured resistance within specifications?

   YES 

   • Go to step  2.

   NO 

   • Repair short to ground in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

1. Ignition "OFF"
2. Disconnect PCM connector and ABS or ESP control module connector.
3. Measure resistance between terminal "52" of PCM harness connector and terminal "14 (With ESP: terminal 40)" of ABS control module harness connector.

   Specification: Approx. below 1Ω

   Fig 2: Measuring Resistance Between Terminal 52 Of PCM Harness Connector And Terminal

   Courtesy of KIA MOTORS AMERICA, INC.
   NOTE: This picture is only applied to vehicle with ABS
4. Is the measured resistance within specifications?

   YES 

   • Go to step  3.

   NO 

   • Check open in harness.
   • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

1. IG "OFF"
2. Check open or short in wheel speed sensor (Refer to "C1203 WHEEL SPEED SENSOR FRONT-RH OPEN/SHORT ")
3. Is the wheel speed sensor normal?

YES 

• Substitute with a known-good PCM/ ABS or ESP control unit and check for proper operation. If the problem is corrected, replace PCM/ ABS or ESP control unit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

NO 

• Repair or replace it as necessary.
• And then go to "VERIFICATION OF VEHICLE REPAIR " procedure.