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NO.6 CRANKS NORMALLY BUT WILL NOT START [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))

BME010300000W05

6 | Cranks normally but will not start
DESCRIPTION | • Starter cranks engine at normal speed but engine will not run. • Refer to symptom troubleshooting "No.5 Engine stalls" if this symptom appears after engine stall. • Fuel in tank. • Battery is in normal condition.
POSSIBLE CAUSE | • No battery power supply to PCM • Air leakage from intake-air system • Open PCM GND or vehicle body GND • Improper operation of IAC valve • EGR valve malfunction
• No signal from CKP sensor due to sensor or related wire
• No signal from CMP sensor due to sensor or related wire
• Low engine compression
• Vacuum leakage
• Spark leakage from ignition coils
• Poor fuel quality
• PCV valve malfunction
• Air cleaner restriction
• Restriction in exhaust system
• Disconnected electrical connector
• Open or short circuit in fuel pump and related harness
• Inadequate fuel pressure
• Fuel pump mechanical malfunction
• Fuel leakage from injector
• Fuel injector clogging
• Purge solenoid valve malfunction
• Immobilizer system and/or circuit 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 injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
  (See BEFORE SERVICE PRECAUTION [AJ].)
  (See AFTER SERVICE PRECAUTION [AJ].)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 |

  Note

  • Following test should be performed on vehicles with immobilizer system. Go to Step 12 for vehicles without immobilizer system.

• Connect WDS or equivalent to DLC-2.

  - Do following conditions appear?
  - Engine is not completely started.
  - DTC P1624 is displayed.

Yes
Both conditions appear:
• Go to Step 4.
No | Either or other condition appear: • Go to next step.
2 | • Does engine stall after approx. 2 seconds since engine is started? | Yes | Go to next step.
No | Immobilizer system is normal. Go to Step 12.
3 | • Is immobilizer unit connector securely connected to immobilizer unit? | Yes | Go to next step.
No | Connect immobilizer unit connector securely. Return to Step 2.
4 | • Does immobilizer indicator light flash and indicate following immobilizer system DTC? DTC 01, 02, 03, 11, 21 | Yes | Go to "ON-BOARD DIAGNOSTIC FUNCTION" of immobilizer system.
No | Go to next step.
5 | • Does immobilizer indicator light illuminate? | Yes | Go to Step 8.
No | Go to next step.
6 | • Does immobilizer indicator light flash and indicate following immobilizer system DTC after above 135 seconds after ignition switch is turned to ON (Engine OFF)? DTC 24, 30 | Yes | Go to "ON-BOARD DIAGNOSTIC FUNCTION" of immobilizer system.
No | Go to next step.
7 | • Turn ignition switch to OFF. • Disconnect immobilizer unit connector. • Connect jumper wire between immobilizer unit connector terminal M and GND. • Turn ignition switch to ON (Engine OFF). • Does immobilizer indicator light illuminate? | Yes | Reconnect immobilizer unit connector. Go to next step.
No | Inspect for open circuit between immobilizer unit connector terminal M and instrument cluster. • If normal, inspect immobilizer indicator light bulb. Repair or replace if necessary. Reconnect immobilizer unit connector, then return to Step 4.
8 | • Connect WDS or equivalent to DLC and retrieve DTC. • Is following DTC displayed? DTC P1602, P1603, P1604, P1621, P1622, P1624 | Yes | Go to appropriate DTC test.
No | Go to next step.
9 | • Is there continuity between PCM ground terminals 6/22/23/25/100 and GND? | Yes | Go to next step.
No | Repair or replace wiring harness.
10 | • Turn ignition switch to ON (Engine OFF). • Inspect voltage between PCM terminals 34 and 60. • Is voltage above 11.5 V? | Yes | Go to next step.
No | Repair or replace wiring harness.
11 | • Disconnect immobilizer unit connector. • Turn ignition switch to ON (ENgine OFF). • Is there battery voltage at immobilizer unit connector terminal J? | Yes | Inspect for open circuit between PCM connector terminal 59 and immobilizer unit connector terminal A.
No | Repair or replace wiring harness between immobilizer unit connector terminal J and fuse panel.
12 | • Verify following:

  - Vacuum connection
  - External fuel shut off or accessory (kill switch, alarm etc.)
  - Fuel quality: proper octane, contamination, winter/summer blend
  - No air leakage from intake-air system
  - Proper sealing of intake manifold and components attached to intake manifold: EGR valve, IAC valve
  - Ignition wiring
  - Electrical connections
  - Fuses
  - Smooth operation of throttle valve

• Are all items normal?
Yes
Go to next step.
No | Service as necessary. Repeat Step 12.
13 | • Connect WDS or equivalent to DLC-2. • Turn ignition switch to ON (Engine OFF). • Retrieve any DTCs. • Is "PASSED" displayed? | Yes | No DTC is displayed: • Go to next step.
No | DTC is displayed: • Go to appropriate DTC test. Communication error message is displayed: • Inspect for following:

  - Open circuit between main relay and PCM terminal 34 or 60
  - Open main relay GND circuit
  - Main relay is stuck open.
  - Open or poor GND circuit (PCM terminal 6, 22, 23, 25 or 100)
  - Poor connection of vehicle body GND

14 | • Turn ignition switch to ON (Engine OFF). • Disconnect TP sensor connector. • Measure voltage at TP sensor connector VREF terminal with ignition switch at ON. Voltage 4.5-5.5 V
• Is voltage normal?
Yes
Go to next step.
No | Go to troubleshooting "No.29 Constant voltage." (See NO.29 CONSTANT VOLTAGE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
15 | • Will engine start and run smoothly at part throttle? | Yes | Inspect IAC valve and wiring harness.
No | Go to next step.
16 | • Connect WDS or equivalent to DLC-2. • Access RPM PID. • Is RPM PID indicating engine speed when cranking engine? | Yes | Go to next step.
No | Inspect for following: • Open or short circuit in CKP sensor • Open or short circuit between CKP sensor and PCM terminal 1 or 27 • Open or short circuit in CKP sensor harnesses

  - If CKP sensor and harness are normal, go to next step.

17 | • Visually inspect CKP sensor and teeth of crankshaft pulley. • Are CKP sensor and teeth of crankshaft pulley normal? | Yes | Go to next step.
No | Replace malfunctioning part.
18 | • Inspect ignition coils. • Are ignition coils normal? | Yes | Repair or replace ignition coil.
No | Go to next step.
19 | • Is strong blue spark visible at each disconnected ignition coil while cranking engine? | Yes | Go to next step.
No | Inspect for following: • Open or short circuit in ignition coil • Open circuit between ignition switch and ignition coil • Open circuit between ignition coil and PCM terminal 52, 78, 101, 102, 103 or 104
20 | • Inspect spark plug conditions. • Is spark plug wet, covered with carbon or grayish white? | Yes | Spark plug is wet or covered with carbon: • Inspect for fuel leakage from injector. Spark plug is grayish white: • Inspect for clogged fuel injector.
No | Install spark plugs on original cylinders. Go to next step.
21 | • Remove and shake PCV valve. • Does PCV valve rattle? | Yes | Go to next step.
No | Replace PCV valve.
22 | • Inspect for restriction in the exhaust system. • Is there any restriction? | Yes | Inspect exhaust system.
No | Go to next step.
23 | • Install fuel pressure gauge between pulsation damper and fuel distributor. • Connect jumper wire between F/P terminal at DLC in engine compartment and GND. • Turn ignition switch to ON (Engine OFF). • Is fuel line pressure correct when ignition switch is cycled ON/OFF five times?
(See FUEL LINE PRESSURE INSPECTION [AJ].)
Yes
Go to next step.
No | Zero or low: • Inspect fuel pump circuit. • Inspect for open fuel pump relief valve. • Inspect for fuel leakage inside pressure regulator. • Inspect for clogged main fuel line. High:
• Inspect pressure regulator for high pressure cause.
• Inspect for clogged fuel return line.
24 | • Visually inspect for fuel leakage at fuel injector O-ring and fuel line. • Service as necessary. • Is fuel line pressure held after ignition switch is turned to OFF? | Yes | Go to next step.
No | Inspect pressure regulator diaphragm condition. • If condition is normal, inspect fuel injector. • If condition is not normal, replace pressure regulator.
25 | • Disconnect vacuum hose between purge solenoid valve and intake manifold from purge solenoid valve side. • Plug opening end of vacuum hose. • Attempt to start engine. • Is starting condition improved? | Yes | Inspect if purge solenoid valve is stuck open mechanically. Inspect EVAP control system.
No | Go to next step.
26 | • Is air leakage felt or heard at intake-air system components while racing engine to higher speed? | Yes | Repair or replace.
No | Go to next step.
27 | • Inspect engine condition while tapping EGR valve housing. • Does engine condition improve? | Yes | Replace EGR valve.
No | Go to next step.
28 | • Is engine compression correct? | Yes | Inspect valve timing.
No | Inspect for causes.
29 | • Verify test results.

  - If normal, return to diagnostic index to service any additional symptoms.
  - If malfunction remains, inspect related Service Information and perform repair or diagnosis.

  • If vehicle is repaired, troubleshooting completed.
  • If vehicle is not repaired or additional diagnostic information is not available, replace or reprogram PCM.