RM36D0EC _58 Vehicle Interior _083094 THEFT DETERRENT / KEYLESS ENTRY _0403001 IMMOBILISER SYSTEM(w/o Smart Entry and Start System) U

THEFT DETERRENT / KEYLESS ENTRY  IMMOBILISER SYSTEM(w/o Smart Entry and Start System)  TERMINALS OF ECU  


CHECK TRANSPONDER KEY ECU ASSEMBLY


B460711
3.365,0.375 3.781,0.635 0.417,0.26 3.458,0.427 3.917,0.625 0.458,0.198 10 false G52

a.

Disconnect the G52 transponder key ECU assembly connector.


b.

Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.


Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item / DTC
G52-4 (+B) - G52-12 (GND) Input LA-GR - LA Battery Always 11 to 14 V +B
G52-5 (KSW) - G52-12 (GND) Input B - LA*1
L - LA*2
Unlock warning switch signal No door control transmitter assembly in ignition key cylinder 10 kΩ or higher
·

B2780

·

Key SW


Door control transmitter assembly in ignition key cylinder Below 1 Ω
G52-6 (IG) - G52-12 (GND) Input L - LA*1
GR - LA*2
Ignition switch Ignition switch off Below 1 V IG SW
Ignition switch ON 11 to 14 V
G52-12 (GND) - Body ground - LA - Body ground Ground Always Below 1 Ω -

*1: for SFTM Made

*2: for GTMC Made



c.

Reconnect the G52 transponder key ECU assembly connector.


d.

Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item / DTC
G52-8 (IND) - G52-12 (GND) Output R - LA Security indicator light signal No door control transmitter assembly in ignition key cylinder, or 20 seconds. elapsed after turning ignition switch to ACC or off (immobiliser system set) Pulse generation Immobiliser
Door control transmitter assembly in ignition key cylinder (immobiliser system unset) Below 1 V
G52-9 (D) - G52-12 (GND) Input/Output P - LA DLC3 communication Without communication Below 1 V -
During communication Pulse generation
G52-2 (ANT1) - G52-12 (GND) Input/Output R - LA Transponder key coil power source No door control transmitter assembly in ignition key cylinder Below 1 V -
Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder Pulse generation
(See waveform 1)
G52-3 (ANT2) - G52-12 (GND) Input/Output W - LA Transponder key coil communication signal No door control transmitter assembly in ignition key cylinder Below 1 V -
Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder Pulse generation
(See waveform 2)
G52-10 (EFII) - G52-12 (GND) Input LG - LA EFI communication input
(Signal input from ECM to transponder key ECU assembly)
Ignition switch off 11 to 14 V -
G52-10 (EFII) - G52-12 (GND) Input LG - LA EFI communication input
(Signal input from ECM to transponder key ECU assembly)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 3)
G52-11 (EFIO) - G52-12 (GND) Output L - LA EFI communication output
(Signal output from transponder key ECU assembly to ECM)
Ignition switch off Below 1 V -
G52-11 (EFIO) - G52-12 (GND) Output L - LA EFI communication output
(Signal output from transponder key ECU assembly to ECM)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 4)


e.

Using an oscilloscope, check the waveform.

i.

Waveform 1

B329909
5.76,0.854 6.219,1.052 0.458,0.198 10 GND

Tester Connection G52-2 (ANT1) - G52-12 (GND)
Tool Setting 20 V/DIV., 2 s./DIV.
Condition Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder


ii.

Waveform 2

B532691
5.75,0.813 6.208,1.01 0.458,0.198 10 false GND

Tester Connection G52-3 (ANT2) - G52-12 (GND)
Tool Setting 20 V/DIV., 2 s./DIV.
Condition Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder


iii.

Waveform 3

B325134
0.906,1.25 1.365,1.448 0.458,0.198 10 GND 2.719,1.354 3.177,1.552 0.458,0.198 10 *a 2.906,1.354 3.365,1.552 0.458,0.198 10 *b
*a Approximately 160 ms. *b Approximately 270 ms.


Tester Connection G52-10 (EFII) - G52-12 (GND)
Tool Setting 2 V/DIV., 500 ms./DIV.
Condition Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery


iv.

Waveform 4

B333259
0.844,1.24 1.302,1.438 0.458,0.198 10 GND 3.115,1.323 3.344,1.531 0.229,0.208 10 *a 3.313,1.323 3.542,1.531 0.229,0.208 10 *b
*a Approximately 160 ms. *b Approximately 270 ms.


Tester Connection G52-11 (EFIO) - G52-12 (GND)
Tool Setting 2 V/DIV., 500 ms./DIV.
Condition Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery




CHECK ECM


A525435
1.833,0.792 2.281,1.042 0.448,0.25 5.448,0.813 5.896,1.063 0.448,0.25 5.448,0.448 5.896,0.698 0.448,0.25 1.938,0.833 2.396,1.031 0.458,0.198 10 false C71 5.521,0.865 5.979,1.063 0.458,0.198 10 false A116 5.521,0.49 5.979,0.688 0.458,0.198 10 false A125 5.969,0.5 6.281,0.698 0.313,0.198 10 false *A 5.979,0.865 6.292,1.063 0.313,0.198 10 false *B
*A for GTMC Made *B for SFTM Made


a.

Measure the voltage and resistance and check for pulses according to the value(s) in the table below.

for GTMC Made:
Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
A125-31 (BATT) - A125-22 (E1) G - W-B Input Power source Always 11 to 14 V -
A125-22 (E1) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
A125-55 (IMO) - A125-22 (E1) P - W-B Output EFI communication output
(Signal input from ECM to transponder key ECU assembly)
Ignition switch off 11 to 14 V -
A125-25 (IMO) - A125-22 (E1) P - W-B Output EFI communication output
(Signal input from ECM to transponder key ECU assembly)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 1)
A125-54 (IMI) - A125-22 (E1) G - W-B Input EFI communication input
(Signal output from transponder key ECU assembly to ECM)
Ignition switch off Below 1 V -
A125-54 (IMI) - A125-22 (E1) G - W-B Input EFI communication input
(Signal output from transponder key ECU assembly to ECM)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 2)

for SFTM Made:
Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
A116-31 (BATT) - A116-22 (E1) G - W-B Input Power source Always 11 to 14 V -
A116-22 (E1) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
A116-55 (IMO) - A116-22 (E1) P - W-B Output EFI communication output
(Signal input from ECM to transponder key ECU assembly)
Ignition switch off 11 to 14 V -
A116-25 (IMO) - A116-22 (E1) P - W-B Output EFI communication output
(Signal input from ECM to transponder key ECU assembly)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 1)
A116-54 (IMI) - A116-22 (E1) G - W-B Input EFI communication input
(Signal output from transponder key ECU assembly to ECM)
Ignition switch off Below 1 V -
A116-54 (IMI) - A116-22 (E1) G - W-B Input EFI communication input
(Signal output from transponder key ECU assembly to ECM)
Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery Pulse generation
(See waveform 2)


b.

Using an oscilloscope, check the waveform of the ECU.

NOTICE:

The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.


i.

Waveform 1

B325134C03
0.917,1.271 1.375,1.469 0.458,0.198 10 GND 2.719,1.354 3.177,1.552 0.458,0.198 10 *a 2.906,1.354 3.365,1.552 0.458,0.198 10 *b
*a Approximately 160 ms *b Approximately 270 ms


Item Content

*1: for GTMC Made

*2: for SFTM Made

Tester Connection A125-55 (IMO) - A125-22 (E1)*1
A116-55 (IMO) - A116-22 (E1)*2
Tool Setting 2 V/DIV., 500 ms./DIV.
Condition Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery


ii.

Waveform 2

B333259C02
0.844,1.24 1.302,1.438 0.458,0.198 10 GND 3.115,1.323 3.344,1.531 0.229,0.208 10 *a 3.313,1.323 3.542,1.531 0.229,0.208 10 *b
*a Approximately 160 ms *b Approximately 270 ms


Item Content

*1: for GTMC Made

*2: for SFTM Made

Tester Connection A125-54 (IMI) - A125-22 (E1)*1
A116-54 (IMI) - A116-22 (E1)*2
Tool Setting 2 V/DIV., 500 ms./DIV.
Condition Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery