Diagnostic procedure

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

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	NOTE: The following test should be performed on the advanced keyless entry system. If not equipped, go to the next step. Start the engine using the standard ignition key. Does the engine start?	Yes	Inspect the advanced keyless entry system and repair or replace according to the inspection result. (See SYMPTOM TROUBLESHOOTING CHART [KEYLESS ENTRY SYSTEM] ).
1		No	Go to next step.
2	Connect the WDS or equivalent to the DLC-2. Do any of the following conditions appear? Engine does not complete start. DTC B1681 is displayed.	Yes	Both conditions are appear: Go to Step 6.
2		No	Either or other condition appears: Go to the next step.
3	Is the coil connector securely connected to the coil?	Yes	Go to the next step.
3	Is the coil connector securely connected to the coil?	No	Connect the connector securely, retest from Step 2.
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 DTCs using the WDS or equivalent. Are any of the following DTCs present? DTC B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431	Yes	Go to the 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 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.
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 Opposition. (Engine off). Measure the voltage between keyless GM 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 2O 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	Is there continuity between PCM terminal 4I and the starter relay with the clutch pedal depressed?	Yes	Go to the next Step.
16		No	Repair or replace the wiring harness.
17	Inspect the following: Battery connection Battery condition Fuses Are all items normal?	Yes	Go to the next step.
17		No	Service if necessary. Repeat Step 1.
18	Is a clicking sound heard from the starter when the ignition switch is turned to the START position?	Yes	Go to the next step.
18		No	Go to Step 24.
19	Inspect the starting system. (See STARTER INSPECTION ). Is the starting system normal?	Yes	Inspect for a seized/hydro-locked engine, flywheel. (See FLYWHEEL INSPECTION [A26MX-R] ).
19		No	Repair or replace components if necessary required.
20	Do any other electrical accessories work?	Yes	Go to the next step.
20	Do any other electrical accessories work?	No	Inspect the charging system. (See BATTERY INSPECTION [L3 WITH TC] ). (See GENERATOR INSPECTION [L3 WITH TC] ).
21	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 ).
21		No	No DTC is displayed: Inspect the following: START circuit in the ignition switch Open circuit between ignition switch and starter Starter interlock switch
22	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.