NO.13 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZR-CD 2.2]

13	ENGINE STALLS/QUITS—ACCELERATION/CRUISE ENGINE RUNS ROUGH—ACCELERATION/CRUISE MISSES—ACCELERATION/CRUISE BUCK/JERK—ACCELERATION/CRUISE/DECELERATION HESITATION/STUMBLE—ACCELERATION SURGES—ACCELERATION/CRUISE
DESCRIPTION	• Engine stops unexpectedly at beginning of acceleration or during acceleration. • Engine stops unexpectedly while cruising. • Engine speed fluctuates during acceleration or cruising. • Engine misses during acceleration or cruising. • Vehicle bucks/jerks during acceleration, cruising, or deceleration. • Momentary pause at beginning of acceleration or during acceleration. • Momentary minor irregularity in engine output.
POSSIBLE CAUSE	• Fuel injection amount control system operates with brake override system (From GH1*-442043, GH10-210449) • Poor fuel quality • No fuel in tank (PCM stores DTCs P0313:00 and/or P115B:00) • Glow system malfunction • Fuel warmer malfunction • Air leakage from intake-air system • Intake-air system restriction or clogging • Engine overheating • Improper operation of A/C system • Turbocharger malfunction • EGR system malfunction • Neutral switch or related circuit malfunction • Cooling fan No.1 seat are improper • Fuel line clogging or restriction • Fuel filter clogging or restriction • Incorrect fuel injection timing • Erratic signal from CKP sensor • Erratic signal from CMP sensor • ECT sensor or related circuit malfunction • Boost sensor or related circuit malfunction • APP sensor or related circuit malfunction • MAF/IAT sensor or related circuit malfunction • IAT sensor No.2 or related circuit malfunction • VSS or related circuit malfunction • Incorrect idle speed • Inadequate fuel pressure ― Fuel pressure sensor or related circuit malfunction ― Fuel pressure limiter malfunction (built-in common rail) ― Suction control valve control circuit malfunction (damaged to driver in PCM caused by short circuit to ground system) ― Suction control valve malfunction (built-in supply pump) ― Supply pump malfunction • Fuel injector malfunction • Low engine compression • Improper valve timing • Exhaust system and/or oxidation catalytic converter restriction • Clutch slippage • Fuel injector injection amount correction improper 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 [MZR-CD 2.2].) (See AFTER SERVICE PRECAUTION [MZR-CD 2.2].)

ENGINE STALLS/QUITS—ACCELERATION/CRUISE

ENGINE RUNS ROUGH—ACCELERATION/CRUISE

MISSES—ACCELERATION/CRUISE

BUCK/JERK—ACCELERATION/CRUISE/DECELERATION

HESITATION/STUMBLE—ACCELERATION

SURGES—ACCELERATION/CRUISE

DESCRIPTION

• Engine stops unexpectedly at beginning of acceleration or during acceleration.

• Engine stops unexpectedly while cruising.

• Engine speed fluctuates during acceleration or cruising.

• Engine misses during acceleration or cruising.

• Vehicle bucks/jerks during acceleration, cruising, or deceleration.

• Momentary pause at beginning of acceleration or during acceleration.

• Momentary minor irregularity in engine output.

POSSIBLE CAUSE

• Fuel injection amount control system operates with brake override system (From GH1***-442043, GH10**-210449)

• Poor fuel quality

• No fuel in tank (PCM stores DTCs P0313:00 and/or P115B:00)

• Glow system malfunction

• Fuel warmer malfunction

• Air leakage from intake-air system

• Intake-air system restriction or clogging

• Engine overheating

• Improper operation of A/C system

• Turbocharger malfunction

• EGR system malfunction

• Neutral switch or related circuit malfunction

• Cooling fan No.1 seat are improper

• Fuel line clogging or restriction

• Fuel filter clogging or restriction

• Incorrect fuel injection timing

• Erratic signal from CKP sensor

• Erratic signal from CMP sensor

• ECT sensor or related circuit malfunction

• Boost sensor or related circuit malfunction

• APP sensor or related circuit malfunction

• MAF/IAT sensor or related circuit malfunction

• IAT sensor No.2 or related circuit malfunction

• VSS or related circuit malfunction

• Incorrect idle speed

• Inadequate fuel pressure

― Fuel pressure sensor or related circuit malfunction

― Fuel pressure limiter malfunction (built-in common rail)

― Suction control valve control circuit malfunction (damaged to driver in PCM caused by short circuit to ground system)

― Suction control valve malfunction (built-in supply pump)

― Supply pump malfunction

• Fuel injector malfunction

• Low engine compression

• Improper valve timing

• Exhaust system and/or oxidation catalytic converter restriction

• Clutch slippage

• Fuel injector injection amount correction improper

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 [MZR-CD 2.2].) (See AFTER SERVICE PRECAUTION [MZR-CD 2.2].)

STEP	INSPECTION	RESULTS	ACTION
1^*1	Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) Is the DTC P2299:00 present?	Yes	Go to the applicable DTC inspection. (fuel injection amount control system operates with brake override system.) (See DTC P2299:00 [MZR-CD 2.2].)
No	Go to the next step.
2	Retrieve the PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) Is the PCM DTC P0313:00 or P115B:00 displayed?	Yes	Go to the applicable DTC inspection. (See DTC P0313:00 [MZR-CD 2.2].) (See DTC P115B:00 [MZR-CD 2.2].)
No	Go to the next step.
3	Is the idle speed stable?	Yes	Go to the next step.
No	Go to the symptom troubleshooting “NO.10 ENGINE RUNS ROUGH/ROLLING IDLE”. (See NO.10 ENGINE RUNS ROUGH/ROLLING IDLE [MZR-CD 2.2].)
4	Is the engine overheating?	Yes	Go to the symptom troubleshooting “NO.19 COOLING SYSTEM CONCERNS-OVERHEATING”. (See NO.19 COOLING SYSTEM CONCERNS-OVERHEATING [MZR-CD 2.2].)
No	Go to the next step.
5	Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [MZR-CD 2.2].) Are any DTCs displayed?	Yes	DTC is displayed: • Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD 2.2].) Communication error message is displayed: • Open circuit in wiring harness between main relay terminal E and PCM terminal 2I • Open circuit in wiring harness between main relay terminal C and PCM terminals 2C, 2F • Main relay is stuck open. • Open or poor ground circuit (PCM terminals 2A, 2B, 2D and 2E) • Poor connection of vehicle body ground
No	Go to the next step.
6	Inspect the following: • Fuel quality (e.g.: including water contamination, winter/summer blend) • Fuel line/fuel filter clogging and/or restriction • Intake-air system restriction or clogging • Exhaust system and/or oxidation catalytic converter restriction • Cooling fan seat Are all items normal?	Yes	Go to the next step.
No	Service if necessary. Repeat Step 6.
7	Does the engine run normal after warm-up?	Yes	Inspect the glow system operation. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].) Inspect the fuel warmer. (See FUEL WARMER INSPECTION [MZR-CD 2.2].) • If there is any malfunction: ― Repair or replace the malfunctioning part according to the inspection results. • If there is no malfunction: ― Go to the next step.
No	Go to the next step.
8	Note • If the following test cannot be performed due to engine stalling, go to the next step. Connect the pressure gauge to the A/C line. Turn the blower and A/C switches on. Is the pressure within the specification?	Yes	Go to the next step.
No	If the A/C is always on: • Go to the symptom troubleshooting “NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY”. (See NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZR-CD 2.2].) For other symptoms: • Inspect the following: ― Refrigerant charging amount ― Cooling fan operation • Repair or replace the malfunctioning part according to the inspection results.
9	Inspect the hose bands between the following parts: • Turbocharger compressor housing and air cleaner • Turbocharger compressor housing and charge air cooler Are the hose bands loose?	Yes	Retighten the hose bands. • If the concern is resolved: ― Symptom troubleshooting is completed. • If the concern still exists: ― Go to the next step.
No	Go to the next step.
10	Inspect for improper operation, kinks, clogging or disconnection on the guide blade actuator. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results. • If the concern is resolved: ― Symptom troubleshooting is completed. • If the concern still exists: ― Turbocharger is normal. • Go to the next step.
No	Turbocharger is normal. • Go to the next step.
11	Perform the EGR Valve Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
No	Go to the next step.
12	Inspect the idle speed. (See ENGINE TUNE-UP [MZR-CD 2.2].) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
No	Go to the next step.
13	Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Replace the accelerator pedal component. (See ACCELERATOR PEDAL COMPONENT REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
14	Inspect the neutral switch. (See NEUTRAL SWITCH INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Replace the neutral switch. (See NEUTRAL SWITCH REMOVAL/INSTALLATION [A26M-R].)
No	Go to the next step.
15	Visually inspect the CKP sensor and teeth of pulse wheel. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD 2.2].) Are the CKP sensor and teeth of pulse wheel normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning part according to the inspection results.
16	Visually inspect the CMP sensor and teeth of pulse wheel. (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR-CD 2.2].) Are the CMP sensor and teeth of pulse wheel normal?	Yes	Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) (See PCM INSPECTION [MZR-CD 2.2].) • ECT • IAT • MAF • RPM ― If the PID value is not normal: • Repair or replace the malfunctioning part according to the inspection results. ― If the PID value is normal: • Go to the next step.
No	Repair or replace the malfunctioning part according to the inspection results.
17	Inspect the suction control valve. (See SUCTION CONTROL VALVE INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Replace the supply pump. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
18	Switch the ignition to off. Disconnect the suction control valve and PCM connectors. Inspect for continuity between suction control valve terminal A (wiring harness-side) and body ground. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground. • If the malfunction remains: ― Replace the PCM. (damaged to driver in PCM caused by short circuit to ground system) (See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
19	Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Replace the common rail. (See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
20	Inspect the engine compression. (See COMPRESSION INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Inspect 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 Service if necessary.
No	Go to the next step.
21	Inspect the fuel injector. (See FUEL INJECTOR INSPECTION [MZR-CD 2.2].) Is there any malfunction?	Yes	Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
22	Inspect the timing chain for the following: • Chipping of gear teeth • Low tension • Breakage damage or cracks Is there any malfunction?	Yes	If the valve timing is incorrect: • Adjust the valve timing. If the timing chain is not normal: • Replace the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Inspect the following: • Clutch slippage • CKP sensor • VSS ― If there is any malfunction: • Repair or replace the malfunctioning part according to the inspection results. ― If there is no malfunction: • Remove the supply pump and common rail. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].) (See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].) • Inspect the supply pump and common rail. (See SUPPLY PUMP INSPECTION [MZR-CD 2.2].) (See COMMON RAIL INSPECTION [MZR-CD 2.2].) • Repair or replace the malfunctioning part according to the inspection results.
23	Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR-CD 2.2].) • 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.

STEP

INSPECTION

RESULTS

ACTION

1^*1

Perform the PCM DTC inspection using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)

Is the DTC P2299:00 present?

Yes

Go to the applicable DTC inspection. (fuel injection amount control system operates with brake override system.)

(See DTC P2299:00 [MZR-CD 2.2].)

Go to the next step.

Retrieve the PCM DTCs using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)

Is the PCM DTC P0313:00 or P115B:00 displayed?

Yes

Go to the applicable DTC inspection.

(See DTC P0313:00 [MZR-CD 2.2].)

(See DTC P115B:00 [MZR-CD 2.2].)

Go to the next step.

Is the idle speed stable?

Yes

Go to the next step.

Go to the symptom troubleshooting “NO.10 ENGINE RUNS ROUGH/ROLLING IDLE”.

(See NO.10 ENGINE RUNS ROUGH/ROLLING IDLE [MZR-CD 2.2].)

Is the engine overheating?

Yes

Go to the symptom troubleshooting “NO.19 COOLING SYSTEM CONCERNS-OVERHEATING”.

(See NO.19 COOLING SYSTEM CONCERNS-OVERHEATING [MZR-CD 2.2].)

Go to the next step.

Perform the KOEO or KOER self test.

(See KOEO/KOER SELF TEST [MZR-CD 2.2].)

Are any DTCs displayed?

Yes

DTC is displayed:

• Go to the applicable DTC inspection.

(See DTC TABLE [MZR-CD 2.2].)

Communication error message is displayed:

• Open circuit in wiring harness between main relay terminal E and PCM terminal 2I

• Open circuit in wiring harness between main relay terminal C and PCM terminals 2C, 2F

• Main relay is stuck open.

• Open or poor ground circuit (PCM terminals 2A, 2B, 2D and 2E)

• Poor connection of vehicle body ground

Go to the next step.

Inspect the following:

• Fuel quality (e.g.: including water contamination, winter/summer blend)

• Fuel line/fuel filter clogging and/or restriction

• Intake-air system restriction or clogging

• Exhaust system and/or oxidation catalytic converter restriction

• Cooling fan seat

Are all items normal?

Yes

Go to the next step.

Service if necessary.

Repeat Step 6.

Does the engine run normal after warm-up?

Yes

Inspect the glow system operation.

(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].)

Inspect the fuel warmer.

(See FUEL WARMER INSPECTION [MZR-CD 2.2].)

• If there is any malfunction:

― Repair or replace the malfunctioning part according to the inspection results.

• If there is no malfunction:

― Go to the next step.

Go to the next step.

Note

• If the following test cannot be performed due to engine stalling, go to the next step.

Connect the pressure gauge to the A/C line.

Turn the blower and A/C switches on.

Is the pressure within the specification?

Yes

Go to the next step.

If the A/C is always on:

• Go to the symptom troubleshooting “NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY”.

(See NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZR-CD 2.2].)

For other symptoms:

• Inspect the following:

― Refrigerant charging amount

― Cooling fan operation

• Repair or replace the malfunctioning part according to the inspection results.

Inspect the hose bands between the following parts:

• Turbocharger compressor housing and air cleaner

• Turbocharger compressor housing and charge air cooler

Are the hose bands loose?

Yes

Retighten the hose bands.

• If the concern is resolved:

― Symptom troubleshooting is completed.

• If the concern still exists:

― Go to the next step.

Go to the next step.

Inspect for improper operation, kinks, clogging or disconnection on the guide blade actuator.

(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results.

• If the concern is resolved:

― Symptom troubleshooting is completed.

• If the concern still exists:

― Turbocharger is normal.

• Go to the next step.

Turbocharger is normal.

• Go to the next step.

Perform the EGR Valve Operation Inspection.

(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results.

Go to the next step.

Inspect the idle speed.

(See ENGINE TUNE-UP [MZR-CD 2.2].)

Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results.

Go to the next step.

Inspect the APP sensor.

(See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Replace the accelerator pedal component.

(See ACCELERATOR PEDAL COMPONENT REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

Inspect the neutral switch.

(See NEUTRAL SWITCH INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Replace the neutral switch.

(See NEUTRAL SWITCH REMOVAL/INSTALLATION [A26M-R].)

Go to the next step.

Visually inspect the CKP sensor and teeth of pulse wheel.

(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD 2.2].)

Are the CKP sensor and teeth of pulse wheel normal?

Yes

Go to the next step.

Repair or replace the malfunctioning part according to the inspection results.

Visually inspect the CMP sensor and teeth of pulse wheel.

(See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR-CD 2.2].)

Are the CMP sensor and teeth of pulse wheel normal?

Yes

Access the following PIDs using the M-MDS:

(See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)

(See PCM INSPECTION [MZR-CD 2.2].)

• ECT

• IAT

• MAF

• RPM

― If the PID value is not normal:

• Repair or replace the malfunctioning part according to the inspection results.

― If the PID value is normal:

• Go to the next step.

Repair or replace the malfunctioning part according to the inspection results.

Inspect the suction control valve.

(See SUCTION CONTROL VALVE INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Replace the supply pump.

(See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

Switch the ignition to off.

Disconnect the suction control valve and PCM connectors.

Inspect for continuity between suction control valve terminal A (wiring harness-side) and body ground.

Is there continuity?

Yes

Repair or replace the wiring harness for a possible short to ground.

• If the malfunction remains:

― Replace the PCM. (damaged to driver in PCM caused by short circuit to ground system)

(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

Inspect the fuel pressure sensor.

(See FUEL PRESSURE SENSOR INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Replace the common rail.

(See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

Inspect the engine compression.

(See COMPRESSION INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Inspect 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

Service if necessary.

Go to the next step.

Inspect the fuel injector.

(See FUEL INJECTOR INSPECTION [MZR-CD 2.2].)

Is there any malfunction?

Yes

Replace the fuel injector.

(See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

Inspect the timing chain for the following:

• Chipping of gear teeth

• Low tension

• Breakage damage or cracks

Is there any malfunction?

Yes

If the valve timing is incorrect:

• Adjust the valve timing.

If the timing chain is not normal:

• Replace the timing chain.

(See TIMING CHAIN REMOVAL/INSTALLATION [MZR-CD 2.2].)

Inspect the following:

• Clutch slippage

• CKP sensor

• VSS

― If there is any malfunction:

• Repair or replace the malfunctioning part according to the inspection results.

― If there is no malfunction:

• Remove the supply pump and common rail.

(See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].)

(See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].)

• Inspect the supply pump and common rail.

(See SUPPLY PUMP INSPECTION [MZR-CD 2.2].)

(See COMMON RAIL INSPECTION [MZR-CD 2.2].)

• Repair or replace the malfunctioning part according to the inspection results.

Verify test results.

• If normal, return to the diagnostic index to service any additional symptoms.

(See SYMPTOM DIAGNOSTIC INDEX [MZR-CD 2.2].)

• 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.