Diagnostic procedure

WARNING: This page is about a different variant/trim than selected.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Connect the WDS or equivalent to the DLC-2. Do any of the following conditions appear? Engine does not completely start. DTC B1681 is displayed.	Yes	Both conditions are appear: Go to Step 5.
1		No	Either or other condition appears: Go to the next step.
2	Does the engine stall after approx. 2s from when it is started?	Yes	Go to the next step.
2		No	Is the Is the immobilizer system is normal. Go to Step 20.
3	Is the coil connector securely connected to coil?	Yes	Go to the next step.
3	Is the coil connector securely connected to coil?	No	Connect the connector securely, retest from Step 1.
4	Does the security light illuminate?	Yes	Go to the next step.
4	Does the security light illuminate?	No	Inspect and repair or replace the following: Wiring harnesses and connectors from PCM terminal 2W and instrument cluster terminal 1G Instrument cluster (See INSTRUMENT CLUSTER INSPECTION ).
5	Retrieve the DTC using the WDS or equivalent. Are any of the following DTCs present? DTC B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431	Yes	Go to appropriate DTC test. (See DTC TABLE [IMMOBILIZER SYSTEM] ).
5		No	Advanced keyless entry system is not equipped: Go to the next step. Advanced keyless entry system is equipped: Go to Step 11.
6	Is there continuity between PCM terminal 4X, 2AB, 2AC and ground?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness.
7	Turn the ignition switch to the ON position (Engine off). Measure the voltage between PCM terminal 4X, 2AB, 2AC and ground. Is the voltage below 1.0V?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness.
8	Turn the ignition switch to the ON position. (Engine off) Access the VPWR PID. Is the VPWR PID normal? VPWR PID Battery voltage	Yes	Go to the next step.
8		No	Repair or replace the wiring harness.
9	Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off) Is there battery voltage at coil connector terminal D?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness between coil connector terminal D and the fuse panel.
10	Inspect the following wiring harness and connectors. Between coil terminal A and PCM terminal 2Q Between coil terminal B and PCM terminal 2T Is there any malfunction (open or short circuit, terminal corrosion, etc).?	Yes	Repair or replace malfunctioning part.
10		No	Go to the next step.
11	Is there continuity between the keyless CM harness-side connector terminal 3C and body ground?	Yes	Go to the next step.
11		No	Repair or replace the wiring harness.
12	Turn the ignition switch to the ON position. Measure the voltage between keyless CM harness-side connector terminal 3C and body ground. Is the voltage below 1.0V?	Yes	Go to the next step.
12		No	Repair or replace the wiring harness.
13	Turn the ignition switch to the ON position. (Engine off). Measure the voltage between keyless CM harness-side connector terminal 3B, 3D, 31 and body ground. Is the voltage B+ ?	Yes	Go to the next step.
13		No	Repair or replace the wiring harness.
14	Turn the ignition switch off. Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off). Measure the voltage between coil harness-side connector terminal D and body ground. Is the voltage B+ ?	Yes	Go to the next step.
14		No	Repair or replace the wiring harness.
15	Inspect the following wiring harnesses and connectors. Between keyless CM terminal 3Y and coil A Between keyless CM terminal 3AA and coil B Between keyless CM terminal 4A and PCM 2T Between keyless CM terminal 4C and PCM 2Q Is there any malfunction (open or short circuit, terminal corrosion, etc).?	Yes	Repair or replace malfunctioning part.
15		No	Go to the next step.
16	Inspect for the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system leakage and restriction Electrical connectors Fuses Fuel leakage Vacuum leakage Poor connection for PCM ground and body ground Are all items normal?	Yes	Go to the next step.
16		No	Service if necessary. Repeat Step 16.
17	Perform the self-test function using the WDS or equivalent. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed?	Yes	DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE ).
17		No	No DTC is displayed: Go to the next step.
18	Access the ECT PID using the WDS or equivalent. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified?	Yes	Go to the next step.
18		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 ).
19	Does the engine start with throttle close?	Yes	Go to the next step.
19	Does the engine start with throttle close?	No	Go to Step 25.
20	Perform the Variable Valve Timing Control System Operation Inspection. (See VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTION ). Does the variable valve timing control system work properly?	Yes	Inspect the valve timing.
20		No	Inspect or replace the malfunctioning parts, according to the inspection results.
21	Will the engine start and run smoothly at part throttle?	Yes	Go to the next step.
21	Will the engine start and run smoothly at part throttle?	No	Go to Step 23.
22	Perform the TP sweep inspection. (See THROTTLE POSITION (TP) SWEEP INSPECTION ). Does the electronic throttle control system work properly?	Yes	Visually inspect the throttle body (damaged/scratching). If normal, go to the next step.
22		No	Inspect or replace the malfunctioning parts, according the to inspection results.
23	Access the RPM PID using the WDS or equivalent. Is the RPM PID indicating engine speed when the cranking engine.	Yes	Go to the next step.
23		No	Inspect the CKP sensor for following; Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION ). Damaged trigger wheel and camshaft Open or short circuit in wiring harnesses Is there any malfunction detected?
24	Inspect CMP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION ). Damaged trigger wheel and camshaft Open or short circuit in wiring harnesses Is there any malfunction detected?	Yes	Repair or replace the malfunctioning part according inspection results.
24		No	Go to the next step.
25	Perform the EGR system operation inspection. (See EGR CONTROL SYSTEM INSPECTION ). Does EGR system operate properly?	Yes	Go to the next step.
25		No	Inspect or replace the malfunctioning parts, according to the inspection results.
26	Perform the Purge Control System Operation inspection. (See PURGE CONTROL SYSTEM INSPECTION ). Does the purge solenoid valve work properly?	Yes	Go to the next step.
26		No	Inspect or replace the malfunctioning parts, according to the inspection results.
27	Access and monitor the following PIDs using the data monitor function. ECT APP MAF O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate the correct values under the malfunction condition? (See USING THE WDS OR EQUIVALENT ).	Yes	Go to the next step.
27		No	Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING ).
28	Inspect for restriction in the exhaust system and three-way catalytic converter (TWC). Is there any restriction?	Yes	Replace malfunctioning part.
28		No	Go to the next step.
29	Remove and shake the PCV valve. Does the PCV valve rattle?	Yes	Go to the next step.
29	Remove and shake the PCV valve. Does the PCV valve rattle?	No	Replace the PCV valve.
30	Perform the spark test. (See SPARK TEST ). Is a strong blue spark visible at each cylinder?	Yes	Go to the next step.
30		No	Inspect or replace the malfunctioning parts, according to the inspection results.
31	Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See USING THE WDS OR EQUIVALENT ).	Yes	Go to Step 38.
31		No	Go to the next step.
32	Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See USING THE WDS OR EQUIVALENT ).	Yes	Troubleshooting is completed. Go to Step 37.
32		No	Go to the next step.
33	Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION ). Is the fuel pressure sensor normal?	Yes	Go to the next step.
33		No	Replace the delivery pipe.
34	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 ). Is the fuel pressure within the specification?	Yes	Go to the next step.
34		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal, replace the fuel pump.
35	Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION ). Are the fuel injectors normal?	Yes	Go to the next step.
35		No	Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION ).
36	Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION ). Are the compression pressures within the specification?	Yes	Replace the injector driver module. If the problem remains, overhaul the engine.
36		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 Service if necessary.
37	Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair 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.