DTC P064D:00 [PCM (SKYACTIV-G 2.0)]

2016 – MX-5 – Engine

NOTE:

To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.

DESCRIPTION	Internal control module A/F sensor processor performance problem
DETECTION CONDITION	Determination conditions	Malfunction in A/F sensor signal circuit in PCM occurs.
	Preconditions	Battery voltage: 11—18 V^1 ^1: Value can be verified by displaying PIDs using M-MDS
	Malfunction determination period	0.1 s period
	Drive cycle	1
	Self test type	CMDTC self test, KOER self test
	Sensor used	PCM
FAIL-SAFE FUNCTION	Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	Illuminates check engine light.
POSSIBLE CAUSE	PCM malfunction

If there is communication error between the A/F signal control driver and the CPU, the PCM stores a DTC.

Warm up the engine to allow the engine coolant temperature to reach 80 °C {176 °F} or more.
Start the engine and leave it idling for 1 min.

NOTE:
- Match the engine coolant temperature in the recorded FREEZE FRAME DATA/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the FREEZE FRAME DATA/snapshot data.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION NOTE: Recording can be facilitated using the screen capture function of the PC. Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) on the repair order.	—	Go to the troubleshooting procedure to perform the procedure from Step 1.

Intention of troubleshooting procedure

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS PCM Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (SKYACTIV-G 2.0)].) Perform the KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0)].) Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
1		No	Go to the next step.
2	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION Is any other DTC or pending code stored?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.0)].)
2		No	DTC troubleshooting completed.