Mazda 3 Service Manual: Starter Cut Relay Inspection [MTX]

Mazda 3 Service Manual / Electrical / Starting, Charging / Starter Cut Relay Inspection [MTX]

Advanced Keyless Entry And Push Button Start System Only

1. Disconnect the negative battery cable.

2. Remove the following parts:

a. Front scuff plate (LH).

b. Front side trim (LH).

c. Side wall.

d. Console.

3. Set the bonnet release lever out of the way..

4. Remove the lower panel..

5. Remove the starter cut relay with the connector connected..

6. Connect the negative battery cable..

7. Measure the voltage at each terminal is as indicated in the terminal voltage tables.

If the voltage or continuity is not as specified in the terminal voltage table, inspect the parts under “Inspection item (s)”.

If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the starter cut relay.

Terminal Voltage Table (Reference)


Terminal	Signal name	Connected to	Measurement condition		Voltage (V)	Inspection item (s)
A	Power supply	Starter relay	Switch the ignitions to off	Clutch pedal is not depressed	Wave pattern 1 (See Pattern 1.)	Starter relay Related wiring harnesses
			Switch the ignitions to off	Clutch pedal is depressed	Wave pattern 2 (See Pattern 2.)
			Switch the ignitions to ON	Clutch pedal is not depressed	B+
			Switch the ignitions to ON	Clutch pedal is depressed	1.0 or less	PCM Related wiring harnesses
D	Starter cut relay output signal	PCM Keyless control module	Switch the ignitions to off	Clutch pedal is not depressed	Wave pattern 2 (See Pattern 2.)	Starter cut relay Related wiring harnesses
D	Starter cut relay output signal	PCM Keyless control module	Switch the ignitions to off	Clutch pedal is depressed	1.0 or less	Starter cut relay Related wiring harnesses
H	Starter interlock switch	Starter interlock switch	Switch the ignitions to ON	Clutch pedal is not depressed	B+	Starter interlock switch Related wiring harnesses
H	Starter interlock switch	Starter interlock switch	Switch the ignitions to ON	Clutch pedal is depressed	1.0 or less	Starter interlock switch Related wiring harnesses
I	IG 1	Stop 15 A fuse	Switch the ignition to ON		B+	Stop 15 A fuse Related wiring harnesses
I	IG 1	Stop 15 A fuse	Switch the ignition to off		1.0 or less	Stop 15 A fuse Related wiring harnesses

Generated pulse (reference)

Pattern 1

Terminal: A (+) ↔ body ground (-)
Oscilloscope setting: 2 V/DIV (Y), 100 ms/DIV (X), DC range

Pattern 2

Terminal:

A (+) ↔ body ground (-)
D (+) ↔ body ground (-)

Oscilloscope setting: 2 V/DIV (Y), 100 ms/DIV (X), DC range

Refrigerant Charging

CAUTION: Do not exceed the specification when charging the system with refrigerant. Doing so will decrease the efficiency of the air conditioner or damage the refrigeration cycle parts. ...

Starter Cut Relay Removal/Installation [MTX]

Advanced Keyless Entry And Push Button Start System Only 1. Disconnect the negative battery cable.. 2. Remove the following parts: Front scuff plate (LH). Front side trim (LH). ...

Other materials:

Underbody Maintenance
Road chemicals and salt used for ice and snow removal and solvents used for dust control may collect on the underbody. If not removed, they will speed up rusting and deterioration of such underbody parts as fuel lines, frame, floor pan, and exhaust system, even though these parts may be coate ...

Engine SST [Mzr 2.0, Mzr 2.5]
1: Mazda SST number 2: Global SST number Example 1:49 UN01 052 2:310–D005 Spring lock coupler tool (green) 1: 49 C017 5A0 2: – Engine support set 1:49 B011 105 2:– Adapter ...

Recording of Vehicle Data
This vehicle is equipped with a computer which records the following main vehicle data related to vehicle controls, operation, and other driving conditions. Recorded data Vehicle conditions such as engine speed and vehicle speed Driving operation conditions such as accelerator and brake pe ...