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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC P0882:00 [TCM (SJ6A-EL)]

DTC P0882:00	Power supply voltage: Low input
DETECTION CONDITION	Vehicle condition: TCM communication normal while engine is idling Status: Detects terminal B+ current of 9.05 V or less Period: Confirmed 20 times continuously for 1 s or more
FAIL-SAFE FUNCTION	Inhibits learning control. Sets to emergency mode.
POSSIBLE CAUSE	Melted AT 15 A fuse Short to ground in wiring harness between AT 15 A fuse and TCM terminal 2AE Short to ground in wiring harness between AT 15 A fuse and TCM terminal 2AI Open circuit in wiring harness between AT 15 A fuse and TCM terminal 2AE Open circuit in wiring harness between AT 15 A fuse and TCM terminal 2AI TCM connector or terminal malfunction TCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION NOTE: Recording can be facilitated using the screen capture of the PC function. Record the freeze frame data/snap shot data.	—	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 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.
		No	Go to the next step.
3	INSPECT AT 15 A FUSE Connect the TCM connector. Switch the ignition off. Inspect the AT 15 A fuse for malfunction. is it normal?	Yes	Go to the next step.
		No	If the AT 15 A fuse has been melted, replace it, then go to the Step 8. If the AT 15 A fuse is not installed correctly, install it correctly, then go to Step 8.
4	INSPECT VOLTAGE OF POWER SUPPLY CIRCUIT Inspect the voltage between TCM terminal (wiring harness-side) and body ground. TCM terminal 2AE TCM terminal 2AI Is the voltage B+?	Yes	Go to the next step.
		No	Go to Step 6.
5	INSPECT TCM CONNECTOR FOR POOR CONNECTION Switch the ignition off. Disconnect the TCM connector. Inspect for poor connection at TCM terminals 2AE and 2AI (such as damaged/pulled-out pins, corrosion). Is terminal normal?	Yes	Go to Step 8.
		No	Repair or replace the connector and/or terminal, then go to Step 8.
6	INSPECT POWER SUPPLY CIRCUIT FOR SHORT TO GROUND Disconnect the positive battery cable. Inspect for continuity between the fuse terminals and body ground. AT 15A fuse terminal and body ground Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: TCM terminal 2AE—AT 15 A fuse TCM terminal 2AI—AT 15 A fuse If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to ground. Go to Step 8.
		No	Go to the next step.
7	INSPECT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between TCM terminal and fuse terminals (wiring harness-side). Terminal 2AE and AT 15 A fuse Terminal 2AI and AT 15 A fuse Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: TCM terminal 2AE—AT 15A fuse TCM terminal 2AI—AT 15A fuse If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to the next step.
8	VERIFY SAME DTC IS NOT PRESENT Always reconnect all disconnected connectors. Clear the DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].) Perform the following procedure to ensure that the DTC has been resolved: Start the engine. Warm-up the engine and transmission. Drive the vehicle in D position and make sure that the gears shift smoothly from 1GR to 6GR. Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].) Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)
		No	Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED Clear the DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].) Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (SJ6A-EL)].)
		No	DTC troubleshooting completed.

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