Test Procedure
- Turn ignition off. Connect Hi-Scan Pro/Kia Data Pro Scan tool or equivalent to OBD-II Data Link Connector. See Figure
. Turn ignition on. Monitor for MAP sensor output voltage. Voltage should be 0.8-2.4 volts. If voltage is not as specified, go to next step. If voltage is as specified, problem is intermittent, check for proper connection at MAP sensor and ECM connectors, and go to step 7
.
- Turn ignition off. Disconnect MAP sensor 4-pin harness connector. See Fig 1
. Turn ignition on. Measure voltage between ground and MAP sensor connector terminal No. 3 (Red wire). Voltage should be approximately 5.0 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to step 7
.
- Turn ignition off. Thoroughly check MAP sensor for damage. Also check for loose, bent or corroded MAP sensor orECM connector terminals. If sensor and connector terminals are okay, go to next step. If sensor and connector terminals are faulty, repair or replace as necessary and go to step 7
.
- Turn ignition off. Disconnect ECM harness connectors "B" and "C". See Figure
. Thoroughly check for loose, bent or corroded terminals. Measure resistance between MAP sensor connector terminal No.1 (Brown wire) and ECM connector terminal B9. Also measure resistance between MAP sensor connector terminal No. 4 (Orange wire) and ECM connector terminal C22. Resistances should be below one ohm. If resistances are as specified, go to next step. If any resistance is not as specified, repair open circuit as necessary and go to step 7
.
- With ECM and MAP sensor harness connector disconnected. Turn ignition on. Measure voltage between ground and MAP sensor harness connector terminal No. 4 (Orange wire). Voltage should be below 0.5 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair short circuit as necessary and go to step 7
.
- Turn ignition off. With ECM and MAP sensor harness connectors disconnected. Measure resistance between ground and MAP sensor harness connector terminal No. 4 (Orange wire). Resistance should be infinity. If resistances are as specified, temporarily install a known good MAP sensor and check for proper operation. If problem is corrected, replace MAP sensor and go to next step. If any resistance is not as specified, repair short circuit as necessary and go to next step.
- After repair, return vehicle to original condition. Clear codes using Hi-Scan Pro/Kia Data Pro Scan tool or equivalent. Verify repairs by driving vehicle and monitoring for pending codes. If DTC is set during test drive, follow appropriate DTC test procedure.
Courtesy of KIA MOTORS AMERICA, INC.