Toyota FJ Cruiser (GSJ 10, 15 series). Manual — part 19
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–31
ES
PROBLEM SYMPTOMS TABLE
HINT:
When a malfunction is not confirmed by a DTC (Diagnostic
Trouble Code) check and the cause of problem cannot be
identified through a basic inspection, troubleshoot according
to the priority order indicated in the table below.
Symptom
Suspected area
See page
Engine does not crank (Does not start)
1. Immobilizer System
-
2. Starter
3. STARTER relay
No initial combustion (Does not start)
1. ECM power source circuit
2. Fuel pump control circuit
3. VC output circuit
4. ECM
Engine cranks normally but difficult to start
1. Fuel pump control circuit
2. Compression
Difficult to start with cold engine
1. Starter signal circuit
2. Fuel pump control circuit
3. Spark plug
4. Ignition system
5. Injector
Difficult to start with warm engine
1. Starter signal circuit
2. Fuel pump control circuit
3. Spark plug
4. Ignition system
5. Injector
High engine idling speed (Poor idling)
1. A/C signal circuit
2. ECM power source circuit
3. Electronic throttle control system
4. Air induction system
-
5. PCV hose
-
Low engine idling speed (Poor idling)
1. A/C signal circuit
2. Fuel pump control circuit
3. Electronic throttle control system
4. Air induction system
-
5. PCV hose
-
Rough idling (Poor idling)
1. Compression
2. Fuel pump control circuit
3. Electronic throttle control system
4. Air induction system
-
5. PCV hose
-
Hunting (Poor idling)
1. ECM power source circuit
2. Fuel pump control circuit
3. Spark plug
4. Ignition system
5. Injector
6. Electronic throttle control system
7. Air induction system
-
8. PCV hose
-
ES–32
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Hesitation/ Poor acceleration (Poor driveability)
1. Fuel pump control circuit
2. A/T faulty* (A750E)
3. A/T faulty* (A750F)
4. Spark plug
5. Ignition system
6. Injector
Surging (Poor driveability)
1. Fuel pump control circuit
2. Spark plug
3. Ignition system
4. Injector
Engine stalls soon after starting
1. Fuel pump control circuit
2. Spark plug
3. Ignition system
4. Injector
Engine stalls during A/C operation
1. A/C signal circuit
2. ECM
Unable/difficult to refuel
Refueling valve (canister)
-
Symptom
Suspected area
See page
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–33
ES
TERMINALS OF ECM
HINT:
The standard normal voltage between each pair of ECM
terminals is shown in the table below. The appropriate
conditions for checking each pair of terminals are also
indicated.
The result of checks should be compared with the standard
normal voltage for that pair of terminals, displayed in the STD
Voltages column.
The illustration above can be used as a reference to identify
the ECM terminal locations.
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
2
3
4
5
6
7
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
3
4
5
6
7
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2
3
4
5
6
7
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
2
3
4
5
6
7
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
2
3
4
5
6
7
E47
E46
B3
B2
B1
A121603E03
Symbols (Terminal No.)
Wiring Colors
Terminal Descriptions
Conditions
STD Voltages
BATT (E47-3) - E1 (B3-1)
L - BR
Battery (for measuring the
battery voltage and for the
ECM memory)
Always
11 to 14 V
+BM (E47-7) - E1 (B3-1)
GR - BR
Power source of throttle
motor
Always
11 to 14 V
IGSW (E47-9) - E1 (B3-1)
B-O - BR
Ignition switch
Ignition switch ON
11 to 14 V
+B (E47-1) - E1 (B3-1)
B - BR
Power source of ECM
Ignition switch ON
11 to 14 V
+B2 (E47-2) - E1 (B3-1)
B - BR
Power source of ECM
Ignition switch ON
11 to 14 V
OC1+ (B3-17) - OC1- (B3-16)
G-Y - L-B
Camshaft timing oil control
valve (OCV)
Ignition switch ON
Pulse generation
(see waveform 1)
OC2+ (B3-15) - OC2- (B3-14)
L-W - L-R
Camshaft timing oil control
valve (OCV)
Ignition switch ON
Pulse generation
(see waveform 1)
MREL (E47-8) - E1 (B3-1)
W-G - BR
EFI relay
Ignition switch ON
11 to 14 V
VC (B1-23) - E2 (B1-28)
L-R - W-G
Power source of sensor
(specific voltage)
Ignition switch ON
4.5 to 5.5 V
VG (B1-30) - E2G (B1-29)
R - R-W
Mass air flow meter
Idling, Shift lever position
P or N, A/C switch OFF
0.5 to 3.0 V
THA (B1-22) - E2 (B1-28)
R-B - W-G
Intake air temperature
sensor
Idling, Intake air
temperature 20
°C (68°F)
0.5 to 3.4 V
THW (B1-21) - E2 (B1-28)
B - W-G
Engine coolant
temperature sensor
Idling, Engine coolant
temperature 80
°C (176°F)
0.2 to 1.0 V
VTA1 (B1-20) - E2 (B1-28)
G-B - W-G
Throttle position sensor
(for engine control)
Ignition switch ON,
Throttle valve fully closed
0.5 to 1.2 V
Ignition switch ON,
Throttle valve fully open
3.2 to 4.8 V
ES–34
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
VTA2 (B1-19) - E2 (B1-28)
G-W - W-G
Throttle position sensor
(for sensor malfunction
detection)
Ignition switch ON,
Throttle valve fully closed
2.1 to 3.1 V
Ignition switch ON,
Throttle valve fully open
4.5 to 5.0 V
VPA (E47-18) - EPA (E47-20)
W-R - LG-B
Accelerator pedal position
sensor (for engine control)
Ignition switch ON,
Accelerator pedal fully
released
0.5 to 1.1 V
Ignition switch ON,
Accelerator pedal fully
depressed
2.6 to 4.5 V
VPA2 (E47-19) - EPA2 (E47-21)
R-B - V-W
Accelerator pedal position
sensor (for sensor
malfunction detection)
Ignition switch ON,
Accelerator pedal fully
released
1.2 to 2.0 V
Ignition switch ON,
Accelerator pedal fully
depressed
3.4 to 5.0 V
VCPA (E47-26) - EPA (E47-20)
B-Y - LG-B
Power source of
accelerator pedal position
sensor (for VPA)
Ignition switch ON
4.5 to 5.5 V
VCP2 (E47-27) - EPA2 (E47-21)
W-L - V-W
Power source of
accelerator pedal position
sensor (for VPA2)
Ignition switch ON
4.5 to 5.5 V
HA1A (B2-2) - E04 (B2-7)
HA2A (B2-1) - E05 (B2-6)
R-L - W-B
B-W - W-B
A/F sensor heater
Idling
Below 3.0 V
Ignition switch ON
11 to 14 V
A1A+ (B2-22) - E1 (B3-1)
P - BR
A/F sensor
Ignition switch ON
3.3 V*
1
A2A+ (B2-23) - E1 (B3-1)
Y - BR
A/F sensor
Ignition switch ON
3.3 V*1
A1A- (B2-30) - E1 (B3-1)
L - BR
A/F sensor
Ignition switch ON
2.9 V*
1
A2A- (B2-31) - E1 (B3-1)
BR - BR
A/F sensor
Ignition switch ON
2.9 V*
1
HT1B (B1-1) - E1 (B3-1)
HT2B (B2-5) - E1 (B3-1)
G - BR
L - BR
Heated oxygen sensor
heater
Idling
Below 3.0 V
Ignition switch ON
11 to 14 V
OX1B (B1-18) - E2 (B1-28)
OX2B (B2-33) - E2 (B1-28)
W - W-G
B - W-G
Heated oxygen sensor
Maintain engine speed at
2,500 rpm for 2 minutes
after warming up
Pulse generation
(see waveform 2)
#10 (B3-2) - E01 (B1-7)
#20 (B3-3) - E01 (B1-7)
#30 (B3-4) - E01 (B1-7)
#40 (B3-5) - E01 (B1-7)
#50 (B3-6) - E01 (B1-7)
#60 (B3-7) - E01 (B1-7)
R-L - BR
G - BR
R - BR
W - BR
Y - BR
L - BR
Injector
Ignition switch ON
11 to 14 V
Idling
Pulse generation
(see waveform 3)
KNK1 (B2-29) - EKNK (B2-28)
B - W
Knock sensor
Maintain engine speed at
4,000 rpm after warming
up
Pulse generation
(see waveform 4)
KNK2 (B2-21) - EKN2 (B2-20)
G - R
Knock sensor
Maintain engine speed at
4,000 rpm after warming
up
Pulse generation
(see waveform 4)
VV1+ (B3-19) - VV1- (B3-29)
R - G
Variable valve timing
(VVT) sensor
Idling
Pulse generation
(see waveform 5)
VV2+ (B3-18) - VV2- (B3-28)
Y - L
Variable valve timing
(VVT) sensor
Idling
Pulse generation
(see waveform 5)
NE+ (B3-21) - NE- (B3-20)
B - W
Crankshaft position sensor
Idling
Pulse generation
(see waveform 5)
IGT1 (B1-8) - E1 (B3-1)
IGT2 (B1-9) - E1 (B3-1)
IGT3 (B1-10) - E1 (B3-1)
IGT4 (B1-11) - E1 (B3-1)
IGT5 (B1-12) - E1 (B3-1)
IGT6 (B1-13) - E1 (B3-1)
Y-R - BR
G - BR
B-W - BR
Y-G - BR
GR - BR
L - BR
Ignition coil with igniter
(ignition signal)
Idling
Pulse generation
(see waveform 6)
Symbols (Terminal No.)
Wiring Colors
Terminal Descriptions
Conditions
STD Voltages
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