RX7 FD & Series 5 Error Codes

Reading Mazda RX-7 FD & Series 5 FC Error Codes

To initiate the Self-Diagnosis function perform the following;

FDs ONLY: Ground TEN terminal in Diagnosis Box (located on driver's side Strut Tower), by running wire from TEN terminal to ground terminal on battery.
Series 5 FCs ONLY: Ground single green Diagnostics Connector (located in back of driver's side headlight, by leading Coil Pack) by running wire from connector to ground terminal on battery.
Turn ignition switch to "ON" position.
"Check Engine" light will flash.
Series 4 FCs ONLY: Click Here

When reading ECU error codes the long flashes represent multiples of 10 (one long flash is equal to 10, two long flashes are equal to 20, three long flashes are equal to 30, etc.). Short flashes are representative of numbers 1 through 9 (one short flash is equal to 1, two short flashes are equal to 2, three short flashes are equal to 3, etc.)

Together, the long and/or short flashes represent an error code number representative of a failure.

Example #A: 2 long flashes and 3 short flashes signify error code #23 (Fuel Thermosensor)
Example #B: 9 short flashes signify error code #9 (Water Thermosensor)
Example #C: 3 long flashes & 7 short flashes signify error code #37 (Oil Metering Pump)

Once an error code number is ascertained, review the chart below for diagnosis. If there is more than one failure present, the code numbers will be indicated in numerical order, lowest first. Error code(s) will repeat until ignition switch is turned off.

Once a failure has been repaired, you can erase the error codes from the ECU memory by performing the following:

Turn off the ignition switch
Remove ground wire from TEN Terminal (FD) or Diagnostics Connector (FC)
Disconnect the negative battery cable for 20 seconds
Depress brake pedal
Operate car in normal manner, then repeat Diagnosis Test to determine if failure has been corrected/repaired.

Review chart below for Code Diagnosis

FD & Series 5 ECU Error Codes
Code #	Flashes	Diagnosed Circuit	Condition	Point	FD	S5 TII	S5 NA
1	1 Short	Ignition Coil (Trailing Side)	Spark Plug Malfunction, Broken Wire or Short Circuit	.Ignition Coil Connection		X	X
				.B/W Terminal Voltage of Coil
				.Wiring from Coil to ECU
				.Coil
2	2 Short	Crank Angle Sensor (NE Signal)	No NE Signal	.Crank Angle Sensor Connector	X	X	X
				.Wiring from Crank Angle Sensor to ECU
				.Crank Angle Sensor
3	3 Short	Crank Angle Sensor (G Signal)	No G Signal	.Crank Angle Sensor Connector	X	X	X
				.Wiring from Crank Angle Sensor to ECU
				.Crank Angle Sensor
5	5 Short	Knock Sensor	Open or Short Circuit	.Knock Sensor Connector	X	X
				.Wiring from Knock Sensor to ECU
				.Knock Sensor
6	6 Short	Speedometer Sensor	No Speedometer Sensor Signal	.Speedometer Sensor Connector	X
				.Wiring from Speedometer Sensor to ECU

8	8 Short	Air Flow Meter (AFM)	Open or Short Circuit	.AFM Connector		X	X
				,AFM
				.Wiring from AFM to ECU
9	9 Short	Water Thermosensor	Open or Short Circuit	.Water Thermosensor Connector	X	X	X
				.Wiring from Water Thermosensor to ECU
				.Water Thermosensor Resistance
10	1 Long	Intake Air Thermosensor (AFM)	Open or Short Circuit	.Intake Air Thermosensor Connector		X	X
				.Wiring from Intake Air Thermosensor to ECU
				.Intake Air Thermosensor Resistance
11	1 Long & 1 Short	Intake Air Thermosensor (Engine)	Open or Short Circuit	.Intake Air Thermosensor Connector	X	X	X
				.Wiring from Intake Air Thermosensor to ECU
				.Intake Air Thermosensor Resistance
12	1 Long & 2 Short	Throttle Sensor (Full Range)	Open or Short Circuit	.Throttle Sensor Connector	X	X	X
				.Wiring from Throttle Sensor to ECU
13	1 Long & 3 Short	Pressure Sensor (Intake Manifold Pressure)	Open or Short Circuit	.Pressure Sensor Connector	X	X	X
				.Wiring from Pressure Sensor to ECU
				.Pressure Sensor Resistance
14	1 Long & 4 short	Atmospheric Pressure Sensor (in ECU)	Open or Short Circuit or ECU Malfunction	.ECU	X	X	X
15	1 Long & 5 Short	Oxygen Sensor	Sensor output continuous <0.55V for 120 sec (FD) or 80 Sec. (FC). In feedback zone	.Oxygen Sensor Connector	X	X	X
				.Wiring from Oxygen Sensor to ECU
				.Oxygen Sensor
16	1 Long & 6 Short	EGR Switch (CA Only)	Open or Short Circuit	.EGR Switch Sensor Connector	X
				.Wiring from EGR Switch Sensor to ECU
				.EGR Switch
17	1 Long & 7 Short	Feedback System	Sensor output not changed after 25 sec. (FD) or 10 Sec. (FC) In feedback zone	.Fuel Pressure	X	X	X
				.Ignition Fuel Leakage
				.Ignition System
				.Air Leakage
				.ECU
18	1 Long & 8 Short	Throttle Sensor (Narrow Range)	Open or Short Circuit	.Throttle Sensor Connector	X	X	X
				.Wiring from Throttle Sensor to ECU
20	2 long	Oil Metering Pump Position Sensor	Open or Short Circuit	.OMP Connector	X	X	X
				.Wiring from OMP Position Sensor to ECU
				.OMP Position Sensor Continuity
23	2 Long & 3 Short	Fuel Thermosensor	Open or Short Circuit	.Fuel Thermosensor Connector	X
				.Wiring from Fuel Thermosensor to ECU
				.Fuel Thermosensor Resistance
25	2 Long & 5 Short	Solenoid Valve (Pressure Regulator Control)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
26	2 Long & 6 Short	Oil Metering Pump (Step Motor)	Open or Short Circuit	.OMP Connector	X	X	X
				.Wiring from OMP Position Sensor to ECU
				.OMP Position Sensor Continuity
27	2 Long & 7 Short	Oil Metering Pump	Open or Short Circuit OR Stuck MOP Sensor, Malfunctioning ECU	.OMP Connector	X	X	X
				.Wiring from OMP Position Sensor to ECU
				.OMP Position Sensor Continuity
28	2 Long & 8 Short	Solenoid Valve (EGR)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
30	3 Long	Solenoid Valve (Split Air Bypass)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
31	3 Long & 1 Short	Solenoid Valve (Relief 1)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
32	3 Long & 2 Short	Solenoid Valve (Switching)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
33	3 Long & 3 Short	Solenoid Valve (Port Air Bypass)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
34	3 Long & 4 Short	Solenoid Valve (Idle Speed Control, BAC)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
37	3 Long & 7 Short	Oil Metering Pump	Low Battery Voltage, Malfunctioning MOP or ECU, Step Motors, Open or Short Circuit	.Charging System	X	X	X
				.OMP Connector
				.Wiring from OMP to ECU
38	3 Long & 8 Short	Solenoid Valve (Accelerated Warm-Up System)	Open or Short Circuit	.Solenoid Valve Connector	X	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
39	3 Long & 9 Short	Solenoid Valve (Relief 2)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
40	4 Long	Solenoid Valve (Purge Control)	Open or Short Circuit	.Solenoid Valve Connector	X		X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
41	4 Long & 1 short	Solenoid Valve (Variable Dynamic Effect Intake (VDI) Control)	Open or Short Circuit	.Solenoid Valve Connector			X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
42	4 Long & 2 short	Solenoid Valve (Turbo Boost Pressure Pre-Control)	Open or Short Circuit	.Solenoid Valve Connector	X	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
43	4 Long & 3 short	Solenoid Valve (Wastegate Control)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
44	4 Long & 4 short	Solenoid Valve (Turbo Control)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
45	4 Long & 5 short	Solenoid Valve (Charge Control)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
46	4 Long & 6 short	Solenoid Valve (Charge Relief)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
50	5 Long	Solenoid Valve (Double Throttle Control)	Open or Short Circuit	.Solenoid Valve Connector	X
				.Wiring from Solenoid Valve to ECU
				.Solenoid Valve Continuity
51	5 Long & 1 Short	Fuel Pump (Resistor) Relay	Open or Short Circuit	. Fuel Pump Relay Connector	X	X	X
				.Wiring from Relay to ECU
				.Relay Continuity
54	5 Long & 2 Short	Air Pump Relay	Open or Short Circuit	Air Pump Relay Connector	X
				.Wiring from Relay to ECU
				.Relay Continuity
71	7 Long & 1 Short	Injector (Front Secondary)	Open Circuit	. Injector Connector	X	X	X
				.Wiring form Injector to ECU
				.Injector Resistance
73	7 Long & 3 Short	Injector (Rear Secondary)	Open Circuit	. Injector Connector	X	X	X
				.Wiring form Injector to ECU
				.Injector Resistance
76	7 Long & 6 Short	Slip Lock Up Off Signal (EC-AT CU)	Open or Short Circuit	.EC-AT CU Connector	X
				Wiring from EC-AT- CU to ECU
77	7 Long & 7 Short	Torque Reduced Signal (EC-AT CU)	Open or Short Circuit	.EC-AT CU Connector	X
				.Wiring from EC-AT- CU to ECU

Last Updated on 4/06/06 By Chris Sanders

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