General Description

DTC Description

DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	• Monitors the status of the invalid input when the input voltage is converted to the switch input signals.	• Poor connection • Open or short in cruise switch circuit • Faulty cruise switch • Faulty PCM
Enable Conditions	• Engine is running • Ignition voltage ≥ 9V • Cruise control system type is learned
Threshold Value	• Invalid switch signal is monitored
Diagnosis Time	• More than 7.8 seconds failure for 9.36 seconds test
MIL On Condition	• NO MIL ON(DTC only)

Specification

Item	Resistance(Ω)
ON/OFF switch	3.9 kΩ ± 5％
SET switch	220 Ω ± 5%
RESUME switch	910 Ω ± 5%
CANCEL switch	0 Ω ± 5%

Schematic Diagram

Monitor Dtc Status

1.	Connect scantool to Data Link Connector(DLC).

2.

IG "ON".

3.	Select "DTC" button, and then Press "DTC Status" to check DTC's information from the DTCs menu.

4.	Read "DTC Status" parameter.

5.

Is parameter displayed "Present fault"? ▶ Go to "Terminal and Connector inspection" procedure. ▶ Fault is intermittent caused by poor contact in the sensor's and/ or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage. Repair or eplace as necessary and go to "Verification of vehicle Repair" procedure.

Terminal And Connector Inspection

1.	Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2.	Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3.	Has a problem been found? ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure . ▶ Go to " Power Circuit Inspection " procedure.

Power Circuit Inspection

CHECK VOLTAGE

1.	IG "OFF" and disconnect Cruise remocon connector.

2.	IG "ON" and ENG "OFF".

3.	Measure voltage between power terminal of Cruise switch harness connector and chassis ground. Specification : Approx. B+

4.	Is the measured voltage within specification? ▶ Go to "Signal Circuit Inspection" procedure. ▶ Repair open or short to ground in harness, and go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection

1.	IG "OFF" and disconnect Cruise switch connector.

2.	IG "ON" and ENG "OFF"

3.	Measure voltage between signal terminal of Cruise switch harness connector and chassis ground. Specification : Approx. 5V

4.	Is the measured voltage within specification? ▶ Go to "Component Inspection" procedure. ▶ Go to "Check short in harness" as follows.

1.	IG "OFF" and disconnect Cruise switch connector and PCM connector.

2.	Measure resistance between signal and power terminals of Cruise switch harness connector.

3.	Measure resistance between signal and ground terminals of Cruise switch harness connector. Specification : Infinite

4.	Is the measured resistance within specification? ▶ Go to "Check open in harness' as follows. ▶ Repair short in harness, and go to "Verification of Vehicle Repair" procedure.

1.	IG "OFF" and disconnect Cruise switch connector and PCM connector.

2.	Measure resistance between signal terminal of Cruise switch harness connector and cruise signal terminal of PCM harness connector. Specification : Below 1Ω

3.	Is the measured resistance within specification? ▶ Go to "Component Inspection" procedure. ▶ Repair open in harness, and go to "Verification of Vehicle Repair" procedure.

Component Inspection

1.	IG "OFF" and disconnect Cruise switch connector.

2.	Measure resistance between signal and power terminals of Cruise switch connector with each switch depressed.(Component side)

3.

Measure resistance between signal and ground terminals of Cruise remocon connector with each switch depressed.(Component side) Specification : Item Resistance(Ω) ON/OFF switch 3.9 kΩ ± 5% between signal and power terminals SET switch 220 Ω ± 5% between signal and ground terminals RESUME switch 910 Ω ± 5% between signal and ground terminals CANCEL switch 0 Ω ± 5% between signal and ground terminals

4.

Is the measured resistance within specification? ▶ Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known - good auto cruise switch and check for proper operation. If the problem is corrected, replace auto cruise switch and go to "Verification of Vehicle Repair" procedure. There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others.

Verification Of Vehicle Repair

1.	After a repair, it is essential to verify that the fault has been corrected.

2.	Connect scantool and select "DTC" button.

3.	Press "DTC Status" button and confirm that "DTC Readiness Flag" indicates "Completed". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.

4.	Read "DTC Status" parameter.

5.	Is parameter displayed "History(Not Present) fault"? ▶ System performing to specification at this time. Clear the DTC. ▶ Go to the applicable troubleshooting procedure.