Cranks Normally But Will Not Start

DETECTION CONDITION AND POSSIBLE CAUSE

3	CRANKS NORMALLY BUT WILL NOT START
DESCRIPTION	Starting concern

CRANKS NORMALLY BUT WILL NOT START INSPECTION

STEP	INSPECTION		ACTION
1	PRELIMINARY CHECKS NOTE: Extended cranking because of a "No Start" can load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts. Perform the following preliminary checks: Fuel quality. Fuel Pump Shutoff Switch. Any external fuel shutoff devices (such as kill switch, alarm). Electrical connections. Intake air tube integrity. Fuses and relays. Are all checks OK?	Yes	Go to step 2.
1		No	Repair as necessary. Verify symptom no longer exists.
2	PERFORM PCM KOEO SELF TEST. ALSO RETRIEVE ANY CONTINUOUS MEMORY DTCS. Are any DTCs displayed during Continuous Memory or Key ON, Engine OFF (KOEO) Self Tests?	Yes	Check for cause. See DIAGNOSTIC TROUBLE CODE NUMBERS .
2		No	Perform See TEST 1: VEHICLE REFERENCE VOLTAGE (VREF) . If test results are OK, go to step 3.
3	DOES THE ENGINE START NOW WITH THE THROTTLE CLOSED? Does the engine start now with the throttle closed?	Yes	Go to step 7.
3		No	Go to step 4.
4	IDLE AIR CONTROL (IAC) CHECK Attempt to start engine at part throttle. Will the engine start and run smoothly at part throttle?	Yes	Possible IAC concern. Go to DTC Step 2 of DTC P0505. See IDLE AIR CONTROL (IAC) VALVE ASSEMBLY MALFUNCTION .
4		No	Go to step 5.
5	CHECK IGNITION/FUEL SYSTEM See TEST 16: NO START . Is a fault indicated?	Yes	Service as required.
5		No	Go to step 6.
6	CHECK EXHAUST SYSTEM Is there a restriction in the exhaust system?	Yes	Service as required.
6		No	Go to step 7.
7	CHECK BASE ENGINE See ENGINE COMPONENT TESTS . Is engine compression correct?	Yes	Go to step 8.
7		No	Check for cause. See ENGINE COMPONENT TESTS .
8	Verify test results. If OK, refer to DIAGNOSTIC INDEX to service any additional symptoms. See ENGINE COMPONENT TESTS .