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	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability Is any related Service Bulletins available?	Yes	Perform repair or diagnosis according to the available Service Bulletins. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE OR STORED DTCs NOTE: Verify that the accelerator pedal is not applied during the KOEO/KOER self-test. Perform the KOEO/KOER self-test Are any DTCs present other than P1124:00?	Yes	Go to the appropriate DTC troubleshooting procedures. (See DTC TABLE [MZI-3.7] .)
3		No	Go to the next step.
4	INSPECT THROTTLE POSITION OPEN CIRCUIT AND CLOSED VOLTAGES Switch the ignition to ON (Engine off). Access the PCM and monitor the TP1 and TP2 PIDs Verify the following PID values while depressing the accelerator pedal to the floor and releasing Pedal fully released. TP1 is 3.7-4.7 V Pedal fully released TP2 is 0.3-1.9 V Pedal fully depressed TP1 is 0.7-2.9 V Pedal fully depressed. TP2 is 4.1-4.7 V Are both PIDs within the specification?	Yes	Go to the Step 14.
4		No	Go to the next step.
5	INSPECT FOR OBSTRUCTION OF THROTTLE BODY WARNING: Substantial opening and closing torque is applied by this system. To prevent injury, be careful to keep fingers away from throttle mechanism when actuated. Failure to follow these instructions may result in personal injury. Switch the ignition to off Remove the air hose from the throttle body Visually inspect for throttle plate obstructions or sludge. Slowly, push the throttle plate to wide open and release Does the throttle plate move freely to wide open and back?	Yes	Go to the next step.
5		No	Isolate and repair the obstruction. Then go to Step 17.
6	INSPECT TP SENSOR RESISTANCE Switch the ignition to off. Disconnect the throttle body connector Measure the resistance between the following terminals (throttle body component side) Throttle body terminal F and D 700-1, 800 ohms Throttle body terminal F and E 1, 300-2, 800 ohms Throttle body terminal C and D 1, 000-2, 400 ohms Throttle body terminal C and E. 500-1, 500 ohms Throttle body terminal D and E 700-2, 100 ohms Are all the resistances within specifications?	Yes	Go to the next step.
6		No	Replace the throttle body, then go to Step 17 (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7] .)
7	INSPECT TP SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY Switch the ignition to ON (Engine off) Measure the voltage between the following circuits Throttle body terminal F (wiring harness-side) and body ground. Throttle body terminal C (wiring harness-side) and body ground Are there voltage B+ ?	Yes	Repair or replace suspected part, then go to Step 17.
7		No	Go to the next step.
8	INSPECT TP SIGNAL CIRCUIT FOR OPEN CIRCUIT Switch the ignition to off. Disconnect the throttle body and PCM connector. Inspect for continuity between the following circuits (wiring harness-side): Throttle body terminal F and PCM terminal 2AN Throttle body terminal C and PCM terminal 2AL Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace suspected part, then go to Step 17.
9	INSPECT TP SENSOR CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Inspect for continuity between the following circuits. Throttle body terminal F (wiring harness-side) and body ground Throttle body terminal C (wiring harness-side) and body ground Is there continuity?	Yes	Repair or replace suspected part, then go to Step 17.
9		No	Go to the next step.
10	INSPECT TP SENSOR CIRCUITS FOR SHORT EACH OTHER Switch the ignition to off. Disconnect the throttle body and PCM connector Measure the resistance between the following circuits (wiring harness-side): Throttle body terminal F and C Throttle body terminal F and D Throttle body terminal F and E Throttle body terminal C and D Throttle body terminal C and E Is the resistance more than 10 kilohms?	Yes	Go to the next step.
10		No	Repair or replace suspected part, then go to Step 17.
11	INSPECT FOR TP2 SIGNAL HIGH VERSUS LOAD WHILE DRIVING THE VEHICLE Switch the ignition to ON (Engine running) Access the TP2 and LOAD PIDs using the M-MDS Is the TP2 PID more than 2.44 V and the LOAD PID less than 30%?	Yes	INSPECT THE INTAKE AIR SYSTEM FOR LEAKS, OBSTRUCTIONS, AND DAMAGE Inspect for broken/loose air outlet tube clamps (throttle body and air cleaner assembly ends), cracks/holes in the air outlet tube, and worn gaskets between the MAF sensor and the air cleaner component. Inspect for throttle body bore for sludge. Inspect the MAF sensor. Repair or replace the suspected part, then go to Step 17.
11		No	Go to next step.
12	INSPECT FOR TP2 SIGNAL LOW VERSUS LOAD WHILE DRIVING THE VEHICLE Switch the ignition to ON (Engine running). Access the PCM and monitor the TP2 and LOAD PIDs Is the TP2 PID less than 0.24 V and the LOAD PID more than 55%?	Yes	Go to the next step.
12		No	Go to Step 14.
13	INSPECT FOR SELF-TEST DTCS Switch the ignition to ON (Engine running). Clear DTC from memory using M-MDS Drive the vehicle while exercising the throttle. Retrieve the continuous memory DTCs. Is the PENDING CODE for this DTC present?	Yes	Go to the next step.
13		No	Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". Then go to Step 17.
14	INSPECT TP SENSOR CIRCUIT FOR INTERMITTENT CONCERN Access the PCM and monitor the TP1 and TP2 PIDs Wiggle, shake, and bend the wiring harness from the throttle body to the PCM. Are the voltages between 0.49-4.65 V?	Yes	Go to the next step.
14		No	Repair or replace suspected part, then go to Step 17.
15	INSPECT THE REPAIR THROUGH PROCEDURE Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS Depress and release the accelerator pedal several time Perform the KOEO self-test (See KOEO/KOER SELF TEST [MZI-3.7] .) Is the PENDING CODE for this DTC present?	Yes	Go to the next step.
15		No	Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". Then go to the next step.
16	INSPECT FOR CORRECT PCM OPERATION Disconnect all the PCM connectors Visually inspect for: Pushed out pins Corrosion Connect all the PCM connectors and verify that they seat correctly Retrieve DTCs using the M-MDS Is the PENDING CODE for this DTC present?	Yes	Go to the next step.
16		No	The system is correctly. Go to the next step.
17	VERIFY TROUBLESHOOTING OF DTC P1124:00 HAS BEEN COMPLETED Verify that all disconnected connectors reconnected Clear the DTC from the PCM memory using the M-MDS. Perform the "KOEO or KOER self-test" using the M-MDS (See KOEO/KOER SELF TEST [MZI-3.7] ) Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
17		No	Go to the next step.
18	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE" (See AFTER REPAIR PROCEDURE [MZI-3.7] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7] .)
18		No	Troubleshooting completed.