Engine Electrical Devices: Diagnosis Suzuki Kizashi I

Electric Throttle Body Assembly On-Vehicle Inspection

Note. Failure to take proper precautions when handling the electric throttle body assembly, may lead to malfunction of the electric throttle body assembly or damage to its components. Do not disassemble electric throttle body assembly. Do not drop electric throttle body assembly or subject it to strong impact. If the electric throttle body assembly is subjected to strong impact it must be replaced. Keep the throttle body housing and/or throttle valve free of dust, metallic particles or other foreign materials. Do not apply undue forces to the throttle valve when checking operation of the throttle valve or performance of the TP sensor; otherwise the plastic gears in the throttle valve actuator will be damaged.

Note. After replacing electric throttle body assembly, calibrate throttle valve position, see ELECTRIC THROTTLE CONTROL SYSTEM CALIBRATION .

APP Sensor On-Vehicle Inspection

Scheme 1

1. Check that accelerator pedal assembly (incorporating APP sensor) has been mounted to vehicle body properly (no pinched floor carpet, etc.). Reinstall accelerator pedal assembly (incorporating APP sensor) if it is not properly mounted, see «ACCELERATOR PEDAL ASSEMBLY (INCORPORATING APP SENSOR) REMOVAL AND INSTALLATION»(ref-585630-S38030633512013111200000) .
2. Connect SUZUKI scan tool to DLC with ignition mode of keyless push start system in "OFF".
3. Push engine switch to change the ignition mode to "ON", select "Data List" mode on SUZUKI scan tool.
4. Check that voltage varies depending on accelerator position as the following graph. If faulty condition is found, check the following points: Wire harness and connections APP sensor: «APP SENSOR INSPECTION»(ref-585630-S40020050102013111200000)

ECT Sensor Inspection

Reference: ECT SENSOR REMOVAL AND INSTALLATION

Check ECT sensor resistance as follows.

Scheme 2

Scheme 3

1. Check resistance between terminals "1" and "2". Make sure its resistance decreases as its temperature increases. If measured resistance is out of specification, replace ECT sensor (1). ECT sensor resistance -20°C (-4°F): 13.51 - 16.17 kohms 20°C (68°F): 2.290 - 2.620 kohms 80°C (176°F): 0.309 - 0.331 kohms

Scheme 4

1. Disconnect A/F sensor connector with ignition mode of keyless push start system in "OFF".
2. Measure resistance of A/F sensor connector (sensor side) between terminals "3" and "4" at A/F sensor connector with ohmmeter. Replace A/F sensor if any faulty conditions are found. NOTE: Sensor temperature affects resistance value largely. Make sure that sensor heater is at specified temperature. A/F sensor heater resistance 2.16 - 2.90 ohms at 20°C (68°F)

Scheme 5

1. Disconnect HO2S connector with ignition mode of keyless push start system in "OFF".
2. Using ohmmeter, measure resistance of HO2S connector (sensor side) between terminals "3" and "4" at sensor connector. If faulty condition is found, replace HO2S, see «A/F SENSOR AND HO2S REMOVAL AND INSTALLATION»(ref-585630-S11030826172013111200000) . NOTE: Sensor temperature affects resistance value largely. Make sure that sensor heater is at specified temperature. HO2S heater resistance 5.0 - 6.4 ohms at 20°C (68°F)

CMP Sensor On-Vehicle Inspection

Check that CMP sensor signal is output properly, see INSPECTION OF ECM AND ITS CIRCUITS .

Check the following points if any faulty conditions are found

1. Wire harness and connections
2. CMP sensor: «CMP SENSOR INSPECTION»(ref-585630-S25509713372013111200000)

CMP Sensor Inspection

Reference: CMP SENSOR REMOVAL AND INSTALLATION

Scheme 6

Scheme 7

1. Check the following points: Check that O-ring (1) is free from damage. Check that end face of sensor and signal rotor tooth are free from any metal particles and damage.
2. Check CMP sensor as follows. If faulty condition is found, replace CMP sensor, see «CMP SENSOR REMOVAL AND INSTALLATION»(ref-585630-S10037708972013111200000) . Connect battery (1) and ohmmeter (3) to CMP sensor as shown in figure. Check that CMP sensor resistance varies as specified below by bringing magnetic substance (iron) to CMP sensor. NOTE: Be sure to keep approximately 1 mm (0.03 in) gap "a" between magnetic substance (iron) and end face of CMP sensor. CMP sensor resistance Resistance varies between less than 220 ohms (ON) and infinity (OFF)

CKP Sensor On-Vehicle Inspection

Check that CKP sensor signal is output properly, see INSPECTION OF ECM AND ITS CIRCUITS .

If faulty condition is found, check the following points

1. Wire harness and connections
2. CKP sensor: «CKP SENSOR INSPECTION»(ref-585630-S20498316972013111200000)

CKP Sensor Inspection

Reference: CKP SENSOR REMOVAL AND INSTALLATION

Scheme 8

Scheme 9

1. Check the following points: Check that O-ring (1) is free from damage. Check that end face of sensor and signal plate tooth are free from any metal particles and damage.
2. Check CKP sensor as follows. If faulty condition is found, replace CKP sensor, see «CKP SENSOR REMOVAL AND INSTALLATION»(ref-585630-S16560259732013111200000) . Connect battery (1) and ohmmeter (3) to CKP sensor as shown in figure. Check that CKP sensor resistance varies as specified below by bringing magnetic substance (iron) to CKP sensor. NOTE: Be sure to keep approximately 1 mm (0.03 in) gap "a" between magnetic substance (iron) and end face of CKP sensor. CKP sensor resistance Resistance varies between less than 220 ohms (ON) and infinity (OFF)

Engine and Emission Control System Relay Inspection

Refer to CONTROL RELAY INSPECTION .

MAF and IAT Sensor On-Vehicle Inspection

Note. Before performing this inspection, be sure to read the "Precautions for ECM Circuit Inspection" under PRECAUTIONS FOR ENGINE .

Check that MAF sensor signal and IAT sensor signal are output properly, see INSPECTION OF ECM AND ITS CIRCUITS .

If faulty condition is found, check the following points

1. Wire harness and connections
2. MAF and IAT sensor, see «MAF AND IAT SENSOR INSPECTION»(ref-585630-S02681912922013111200000) .

MAF and IAT Sensor Inspection

Reference: MAF AND IAT SENSOR REMOVAL AND INSTALLATION

Scheme 10

1. Remove MAF and IAT sensor, see «MAF AND IAT SENSOR REMOVAL AND INSTALLATION»(ref-585630-S10093614092013111200000) .
2. Check sensor O-ring (1) for damage and deterioration. Replace if necessary.
3. Measure resistance between sensor terminals "1" and "2" while blowing hot air to temperature sensing part (2) of MAF and IAT sensor (3) using hot air drier (4). If faulty condition is found, replace MAF and IAT sensor, see «MAF AND IAT SENSOR REMOVAL AND INSTALLATION»(ref-585630-S10093614092013111200000) . Intake air temperature sensor resistance -20°C (-4°F): 13.6 - 18.4 kohms 20°C (68°F): 2.21 - 2.69 kohms 60°C (140°F): 0.439 - 0.667 kohms

Scheme 11

Scheme 12

1. Remove MAF and IAT sensor, see «MAF AND IAT SENSOR REMOVAL AND INSTALLATION»(ref-585630-S10093614092013111200000) .
2. Connect battery (2) and voltmeter (3) to MAF and IAT sensor (1) as shown in figure.
3. Check that voltage varies depending on amount of blowing air as the following graph. If faulty condition is found, replace MAF and IAT sensor, see «MAF AND IAT SENSOR REMOVAL AND INSTALLATION»(ref-585630-S10093614092013111200000) .

Scheme 13

IMT Valve Actuator On-Vehicle Inspection

Check that IMT valve actuator signal is outputted properly, see INSPECTION OF ECM AND ITS CIRCUITS .

If faulty condition is found, check the following points

1. Wire harness and connections
2. IMT valve actuator, see «IMT VALVE ACTUATOR INSPECTION»(ref-585630-S38325412722013111200000)

IMT Valve Actuator Inspection

Connect battery positive (+) and negative (-) terminals to IMT valve actuator (2) as shown in table below. If IMT valve actuator pinion gear (1) does not operate as specified direction, replace IMT valve actuator, see IMT VALVE ACTUATOR REMOVAL AND INSTALLATION .

IMT valve actuator pinion gear rotative direction

IMT VALVE ACTUATOR TERMINAL REFERENCE

Scheme 14

Scheme 15

Scheme 16

1. Remove oil control valve, see «OCV REMOVAL AND INSTALLATION»(ref-585578-S27634798392013111200000) .
2. Check OCV as follows. Check oil control valve for clog or damage. If check result is not satisfactory, clean or replace OCV. Check resistance between terminals of oil control valve connector (1). If faulty condition is found, replace OCV. Oil control valve resistance 6.7 - 7.7 ohms at 20°C (68°F) Connect battery to OCV connector (1) as shown in figure, and check that there is operating sound and that spool valve (2) is properly operating. If faulty condition is found, replace OCV, see «OCV REMOVAL AND INSTALLATION»(ref-585578-S27634798392013111200000) .