Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	PERFORM PCM DTC INSPECTION Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L5] .) (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection (See DTC TABLE [L5] .) (See DTC TABLE [MZI-3.7] .)
1		No	Go to the next step
2	INSPECT FUSE Switch the ignition to off Disconnect the negative battery cable. Remove and inspect the following fuses MAIN 125 A fuse BTN 30 A fuse ROOM 15 A fuse IG KEY1 40 A fuse METER 15 A fuse Are there any malfunction?	Yes	Replace the malfunctioning fuse, then go to Step 11.
2		No	Go to the next step
3	INSPECT BATTERY Inspect the battery. (See BATTERY INSPECTION [L5] .) (See BATTERY INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Recharge or replace the battery, then go to Step 11. (See BATTERY RECHARGING [L5] .) (See BATTERY RECHARGING [MZI-3.7] .) (See BATTERY REMOVAL/INSTALLATION [L5] .) (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
3		No	Go to the next step.
4	INSPECT GENERATOR Inspect the generator. (See GENERATOR INSPECTION [L5] .) (See GENERATOR INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Replace the generator, then go to Step 11. (See GENERATOR REMOVAL/INSTALLATION [L5] .) (See GENERATOR REMOVAL/INSTALLATION [MZI-3.7] .)
4		No	Go to the next step.
5	INSPECT IGNITION SWITCH CONNECTOR CONDITION Disconnect the ignition switch connector. Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 11.
5		No	Go to the next step.
6	INSPECT INSTRUMENT CLUSTER CONNECTOR CONDITION Disconnect the instrument cluster connector. Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 11.
6		No	Go to the next step.
7	INSPECT IGNITION SWITCH Inspect the ignition switch. (See IGNITION SWITCH INSPECTION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Is there any malfunction?	Yes	Replace the ignition switch, then go to Step 11. (See IGNITION SWITCH REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
7		No	Go to the next step.
8	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT Install the fuses. Reconnect the negative battery cable. Switch the ignition to ON. Measure the voltage between following terminals and body ground: Instrument cluster terminal 2H (wiring harness-side) Ignition switch terminal E (wiring harness-side) Is the voltage B+?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible short to ground or open circuit, then go to Step 11.
9	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Inspect for continuity between ignition switch terminal D (wiring harness-side) and body ground. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 11.
9		No	Go to the next step.
10	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between ignition switch terminal D (wiring harness-side) and instrument cluster terminal 2V (wiring harness-side). Is there continuity?	Yes	Go to the next step.
10		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
11	VERIFY TROUBLESHOOTING COMPLETED Switch the ignition to off Make sure reconnect the disconnected connectors Reconnect the negative battery cable Clear the DTC from the instrument cluster memory using the M-MDS (See CLEARING DTC [INSTRUMENT CLUSTER] .) Perform the instrument cluster DTC inspection using the M-MDS (See DTC INSPECTION [INSTRUMENT CLUSTER] ) Is the same DTC present?	Yes	Replace the instrument cluster, then go to the next step. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
11		No	Go to the next step
12	VERIFY THAT NO OTHER DTCs ARE RECORDED Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER] )
12		No	DTC troubleshooting completed

Step	Inspection		Action
1	PERFORM PCM DTC INSPECTION Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L5] .) (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L5] .) (See DTC TABLE [MZI-3.7] .)
1		No	Go to the next step.
2	INSPECT FUSE Switch the ignition to off Disconnect the negative battery cable. Remove and inspect the following fuses MAIN 125 A fuse BTN 30 A fuse ROOM 15 A fuse IG KEY1 40 A fuse METER 15 A fuse Are there any malfunction?	Yes	Replace the malfunctioning fuse, then go to Step 11.
2		No	Go to the next step.
3	INSPECT BATTERY Inspect the battery. (See BATTERY INSPECTION [L5] .) (See BATTERY INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Recharge or replace the battery, then go to Step 11. (See BATTERY RECHARGING [L5] .) (See BATTERY RECHARGING [MZI-3.7] .) (See BATTERY REMOVAL/INSTALLATION [L5] .) (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
3		No	Go to the next step.
4	INSPECT GENERATOR Inspect the generator (See GENERATOR INSPECTION [L5] .) (See GENERATOR INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Replace the generator, then go to Step 11 (See GENERATOR REMOVAL/INSTALLATION [L5] .) (See GENERATOR REMOVAL/INSTALLATION [MZI-3.7] .)
4		No	Go to the next step.
5	INSPECT RELAY BLOCK CONNECTOR CONDITION Disconnect the relay block connector Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion) Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 11.
5		No	Go to the next step
6	INSPECT INSTRUMENT CLUSTER CONNECTOR CONDITION Disconnect the instrument cluster connector Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion) Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 11
6		No	Go to the next step.
7	INSPECT RELAY BLOCK Inspect the relay block (See RELAY BLOCK INSPECTION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Is there any malfunction?	Yes	Replace the relay block, then go to Step 11. (See RELAY BLOCK REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
7		No	Go to the next step.
8	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT Install the fuses Reconnect the negative battery cable Switch the ignition to ON. Measure the voltage between following terminals and body ground Instrument cluster terminal 2H (wiring harness-side) Relay block terminal 1A (wiring harness-side) Is the voltage B+ ?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible short to ground or open circuit, then go to Step 11.
9	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Inspect for continuity between relay block terminal 2B (wiring harness-side) and body ground Is there continuity"?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 11.
9		No	Go to the next step
10	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between relay block terminal 2B (wiring harness-side) and instrument cluster terminal 2V (wiring harness-side) Is there continuity?	Yes	Go to the next step.
10		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
11	VERIFY TROUBLESHOOTING COMPLETED Switch the ignition to off Make sure reconnect the disconnected connectors Reconnect the negative battery cable Clear the DTC from the instrument cluster memory using the M-MDS. (See CLEARING DTC [INSTRUMENT CLUSTER] .) Perform the instrument cluster DTC inspection using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER] ) Is the same DTC present?	Yes	Replace the instrument cluster, then go to the next step (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
11		No	Go to the next step
12	VERIFY THAT NO OTHER DTCs ARE RECORDED Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER] .)
12		No	DTC troubleshooting completed