NO.5 ENGINE STALLS-AFTER START/AT IDLE [L3 Turbo]SM2444505
NO.5 ENGINE STALLS-AFTER START/AT IDLE [L3 Turbo]

id0103b4801100

5

ENGINE STALLS—AFTER START/AT IDLE
DESCRIPTION
• Engine stops unexpectedly at idle or after start or both.
POSSIBLE CAUSE
• A/C system improper operation
• Air leakage from intake-air system
• Purge solenoid valve malfunction
• Improper operation of electronic throttle control system
• EGR valve malfunction
• Vacuum leakage
• Engine overheating
• Low engine compression
• Ignition system malfunction
• Poor fuel quality
• Intake-air system restriction
• Exhaust system and/or TWC restriction or clogging
• Electrical connector disconnection
• Open or short circuit in the fuel pump (low-side) body or related wiring harness
• Fuel pump resister or related circuit malfunction
• No battery power supply to PCM or poor ground
• Inadequate fuel pressure (high or low pressure side)
• Fuel pressure sensor or related circuit malfunction
• Spill valve control solenoid valve malfunction (built-in high pressure fuel pump)
• Relief valve malfunction (built-in delivery pipe)
• Fuel pump (low-side) body mechanical malfunction
• Fuel leakage
• Fuel line restriction
• Fuel filter clogging
• Incorrect fuel injection timing
• High pressure fuel pump malfunction
• Fuel injector malfunction
• Ignition coil malfunction
• Improper air/fuel mixture ratio control
• No signal from CKP sensor due to sensor, related wiring harness or wrong installation
• Erratic signal from CMP sensor
• A/F sensor, HO2S or related circuit malfunction
• ECT sensor or related circuit malfunction
• APP sensor or related circuit malfunction
• MAF sensor or related circuit malfunction
• Improper valve timing
• Improper operation variable valve timing control system
• Immobilizer system and/or circuit malfunction
• PCV valve malfunction
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE SERVICE PRECAUTION” and “AFTER SERVICE PRECAUTION” described in this manual. (See BEFORE SERVICE PRECAUTION [L3 Turbo].) (See AFTER SERVICE PRECAUTION [L3 Turbo].)
Caution
• Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
Do any of the following conditions appear?
• Engine does not start completely.
• DTC B1681:00 is displayed.
Yes
Both conditions are appear:
Go to Step 5.
No
Either or other condition appears:
Go to the next step.
2
Does the engine stall after approx. 2 s from when it is started?
Yes
Go to the next step.
No
Immobilizer system is normal.
• Go to Step 15.
3
Is the coil antenna connector securely connected to coil antenna?
Yes
Go to the next step.
No
Retighten the coil antenna connector, then retest from Step 2.
4
Does the security light illuminate?
Yes
Go to the next step.
No
Inspect and repair or replace the following:
• Instrument cluster (See INSTRUMENT CLUSTER INSPECTION.) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
• With advanced keyless entry and start system:
― Wiring harness between keyless control module terminal 3X and instrument cluster terminal 2R
― Wiring harness between keyless control module terminal 3W and instrument cluster terminal 2T
• Without advanced keyless entry and start system:
― Wiring harness between PCM terminal 1AM and instrument cluster terminal 2R
― Wiring harness between PCM terminal 1AI and instrument cluster terminal 2T
5
Retrieve immobilizer system DTCs using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)].)
(See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)].)
(See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
No
Go to the next step.
6
Is there continuity between PCM terminal 1BB, 1AZ, 1BG, 1BD, 1BH and ground?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
7
Turn the ignition switch to the ON position (engine off).
Measure the voltage at the PCM terminal 1BB, 1AZ, 1BG, 1BD, 1BH (wiring harness-side).
Is the voltage below 1.0 V?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
8
Turn the ignition switch to the ON position (engine off).
Access the VPWR PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Is the VPWR PID value B+?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
9
Turn the ignition switch off.
Disconnect the coil antenna connector.
Turn the ignition switch to the ON position (engine off).
Measure the voltage at the coil antenna terminal D (wiring harness-side).
Is the voltage B+?
Yes
Go to the next step.
No
Repair or replace the wiring harness between coil antenna terminal D and the fuse panel.
10
Inspect the wiring harness between the following terminals (wiring harness-side) and related connectors:
• With advanced keyless entry and start system:
― Coil antenna terminal A and keyless control module terminal 3V
― Coil antenna terminal B and keyless control module terminal 3U
• Without advanced keyless entry and start system:
― Coil antenna terminal A and instrument cluster terminal 2Q
― Coil antenna terminal B and instrument cluster terminal 2S
Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
With advanced keyless entry and start system:
• Go to the next step.
Without advanced keyless entry and start system:
• Go to Step 14.
11
Is there continuity between keyless control module terminal 2B (wiring harness-side) and body ground?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
12
Turn the ignition switch to the ON position.
Measure the voltage at the keyless control module terminal 2B (wiring harness-side).
Is the voltage below 1.0 V?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
13
Turn the ignition switch to the ON position (engine off).
Measure the voltage at the keyless control module terminal 2A, 2C, 2E (wiring harness-side).
Is the voltage B+?
Yes
Go to the next step.
No
Repair or replace the suspected wiring harness.
14
Inspect the wiring harness between the following terminals (wiring harness-side) and related connectors:
• Keyless control module terminal 3W and PCM terminal 1AI
• Keyless control module terminal 3X and PCM terminal 1AM
Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
15
Inspect for the following:
• Fuel quality (proper octane, contamination, winter/summer blend)
• Intake-air system leakage and restriction
• Electrical connectors
• Poor connection for PCM ground and body ground
• Fuel leakage
• Vacuum leakage
Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
Repeat this step.
No
Go to the next step.
16
Turn the ignition switch to the ON position.
Retrieve any DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [L3 Turbo].)
No
Go to the next step.
17
Access the ECT PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Verify that the ECT PID value is less than 116 °C {241 °F} during driving.
Is the ECT PID value less than specification?
(See PCM INSPECTION [L3 Turbo].)
Yes
Go to the next step.
No
The cause of this concern could be from the cooling system overheating.
Perform the symptom troubleshooting “NO.17 COOLING SYSTEM CONCERNS-OVERHEATING”.
(See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 Turbo].)
18
Access the VPWR PID using the M-MDS.
Turn the ignition switch to the ON position (engine off).
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Does the VPWR PID value B+?
Yes
Go to the next step.
No
Repair or replace the wiring harness between main relay terminal 5 and PCM terminal 1BE and 2E.
19
Perform the A/C Cut-off Control System Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Does the A/C cut-off operation work properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
20
Will the engine run smoothly at part throttle?
Yes
Go to the next step.
No
Go to Step 22.
21
Perform the TP sweep inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Does the electronic throttle control system work properly?
Yes
Visually inspect the throttle body (damage/scratching.)
• If normal:
― Go to the next step.
• If not:
― Repair or replace the malfunctioning part according to the inspection results.
No
Repair or replace the malfunctioning part according to the inspection results.
22
Perform the EGR Control System Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Does EGR system operate properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
23
Perform the Purge Control System Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Does the purge solenoid valve work properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
24
Perform the Variable Valve Timing Control System Operation Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Does the variable valve timing control system work properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
25
Inspect the CMP and CKP sensor for the following:
• Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 Turbo].) (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)
• Damaged trigger wheel and camshaft
• Open or short circuit in the wiring harnesses
Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
26
Access the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
• ECT
• APP1
• APP2
• MAF
• O2S11
• O2S12
• LONGFT1
• SHTFT1
Do the PIDs indicate the correct values under trouble condition?
(See PCM INSPECTION [L3 Turbo].)
Yes
Go to the next step.
No
Inspect the suspected parts and related wiring harness.
• If normal:
― Perform the “INTERMITTENT CONCERN TROUBLESHOOTING” procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 Turbo].)
• If not:
― Repair or replace the malfunctioning part according to the inspection results.
27
Inspect for restriction in the exhaust system and TWC.
Is there any restriction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
28
Perform the Spark Test.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Is a strong blue spark visible at each cylinder?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
29
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Is the FUEL_PRES PID value within the specification?
(See PCM INSPECTION [L3 Turbo].)
Yes
Go to Step 33.
No
Go to the next step.
30
Is the vehicle accelerate performance normally?
Yes
Go to the next step.
No
Go to Step 32.
31
Inspect the fuel pressure sensor.
(See FUEL PRESSURE SENSOR INSPECTION [L3 Turbo].)
Is there any malfunction?
Yes
Replace the fuel delivery pipe.
(See FUEL INJECTOR REMOVAL/INSTALLATION [L3 Turbo].)
No
Go to Step 33.
32
Replace the high pressure fuel pump.
(See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 Turbo].)
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Is the FUEL_PRES PID value within the specification?
(See PCM INSPECTION [L3 Turbo].)
Yes
High pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction.
• Go to Step 37.
No
Relief valve malfunction.
• Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 Turbo].)
33
Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump.
Measure the fuel pressure line of the low pressure side.
(See FUEL LINE PRESSURE INSPECTION [L3 Turbo].)
Is the fuel pressure within the specification?
Yes
Go to the next step.
No
Inspect for the following:
• Fuel line restriction
• Fuel filter clogging
• If normal:
― Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 Turbo].)
• If not:
― Repair or replace the malfunctioning part according to the inspection results.
34
Perform the Fuel Injector Operation Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Do the fuel injectors operate normally?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
35
Measure the compression pressure for each cylinder.
(See COMPRESSION INSPECTION [L3 Turbo].)
Are the compression pressures within the specification?
Yes
Go to the next step.
No
Inspect for the following:
• Damaged valve seat
• Worn valve stem and valve guide
• Worn or stuck piston ring
• Worn piston, piston ring or cylinder
• Improper valve timing
Repair or replace the malfunctioning part according to the inspection results.
36
Inspect the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 Turbo].)
Is there any malfunction?
Yes
Replace the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 Turbo].)
No
Replace the PCM (injector driver circuit malfunction).
(See PCM REMOVAL/INSTALLATION [L3 Turbo].)
• If the problem remains:
― Repair or replace the malfunctioning part according to the inspection results.
37
Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [L3 Turbo].)
• If the malfunction remains, inspect the related Service Information and perform the repair or diagnosis.
― If the vehicle is repaired, troubleshooting is completed.
― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.