Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 322
5A-79 Automatic Transmission/Transaxle:
DTC P2764: Torque Converter Clutch (TCC) Circuit Low
S6JB0A5104048
Wiring Diagram
Refer to “DTC P2763: Torque Converter Clutch (TCC) Circuit High”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Keep engine running at idle speed in “P” range for 20 seconds or more.
5) Check DTC, pending DTC and freeze-frame data.
DTC Troubleshooting
DTC Detecting Condition
Trouble Area
Voltage of TCC pressure control solenoid valve TCM terminal is
low although TCM is commanding TCC pressure control solenoid
to turn ON.
(1 driving cycle detection logic)
• TCC pressure control solenoid valve circuit
open or shorted to ground.
• Malfunction of TCC pressure control solenoid
valve
• TCM
Step
Action
Yes
No
1
Was “A/T System Check” performed?
Go to Step 2.
Go to “A/T System
Check”.
2
Check TCC pressure control solenoid valve circuit for
ground short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminals “E92-
3” and “E92-5”.
3) If connection is OK, check continuity between terminal
“E92-5” of disconnected harness side TCM connector
and ground.
Is continuity indicated?
TCC pressure control
solenoid valve circuit is
shorted to ground. If
circuit is OK, go to Step
4.
Go to Step 4.
3
Check TCC pressure control solenoid valve circuit for
open
1) Check resistance between terminal “E92-3” and “E92-5”
of disconnected harness side TCM connector.
Is it infinity?
TCC pressure control
solenoid valve circuit is
open. If circuit is OK, go
to Step 4.
Go to Step 4.
4
Inspection TCC pressure control solenoid valve
1) Inspection TCC pressure control solenoid valve referring
Is check results satisfactory?
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to “Intermittent
and Poor Connection
Inspection in Section
00”. If OK, substitute a
known-good TCM and
recheck.
Replace TCC pressure
control solenoid valve
referring to “Solenoid
Valves (Shift Solenoid-
A, Shift Solenoid-B,
TCC Pressure Control
Solenoid and Pressure
Control Solenoid
Removal and
Installation”.
Automatic Transmission/Transaxle: 5A-80
Inspection of TCM and Its Circuits
S6JB0A5104049
TCM and its circuits can be checked at TCM wiring connectors by measuring voltage, pulse signal and resistance.
CAUTION
!
TCM cannot be checked by itself, it is strictly prohibited to connect voltmeter or ohmmeter to TCM with
connector disconnected from it.
1) Remove TCM (1) from vehicle referring to “Transmission Control Module (TCM) Removal and Installation”.
2) Connect TCM connectors (2) to TCM.
3) Check voltage and/or pulse signal at each terminal of connectors connected using voltmeter (3) and oscilloscope
(4).
NOTE
• As each terminal voltage is affected by battery voltage, confirm that it is 11 V or more when ignition
switch is ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal. Check it with
oscilloscope if necessary.
Terminal arrangement of TCM coupler (Viewed from harness side)
3. Body ground
3
4
1
2
I4RS0A510021-02
6
5
16 15 14 13 12 11
4 3
24 23
21
22
10 9
8
7
2
1
19
20
18 17
E92
17 16
26 25
15 14
6
5
3
4
2
13 12
23 22
24
11 10 9
21 20 19
8 7
18
1
E93
I5JB0A510151-01
5A-81 Automatic Transmission/Transaxle:
Connector “E92”
Terminal Wire color
Circuit
Standard
voltage
Condition
1
BLK/ORN Ground
0 – 1 V
Ignition switch ON
2
BRN/RED
Pressure control
solenoid valve (–)
0.6 – 1.0 V Ignition switch ON
3
PPL/WHT
TCC pressure control
solenoid valve (–)
0.6 – 1.0 V Ignition switch ON
4
YEL/RED
Pressure control
solenoid valve (+)
*0 – 0.6 V
↑↓
10 – 14 V
Engine running at idling.
(Output signal is duty pulse. Duty ratio varies
depending on throttle valve opening.)
5
GRN/YEL
TCC pressure control
solenoid valve (+)
*0 – 0.6 V
↑↓
10 – 14 V
Engine running at idling.
(Output signal is duty pulse. Duty ratio varies
depending on torque converter clutch operating
condition.)
6
BLK/WHT Power source
10 – 14 V Ignition switch ON
7
WHT
CAN communication
line (Low)
*2.5 – 3.6 V
↑↓
1.6 – 2.5 V
Engine running at idling with after warming up.
(CAN communication signal is pulse. Pulse signal
frequency varies depending on engine condition.))
8
—
—
—
—
9
—
—
—
—
10
YEL/BLK
3 position switch (–)
0 – 1 V
Ignition switch ON
11
YEL/BLK
Transmission fluid
temperature sensor (+)
2.9 – 3.1 V Ignition switch ON, fluid temperature is 20
°C (68 °F)
0.3 – 0.5 V Ignition switch ON, fluid temperature is 100
°C (212 °F)
12
ORN
Transmission fluid
temperature sensor (–)
0 – 1 V
Ignition switch ON
13
—
—
—
—
14
—
—
—
—
15
GRN/RED
Shift solenoid valve-B
(No.2)
9 – 14 V
Ignition switch ON, select lever in “P” range
16
GRN
Shift solenoid valve-A
(No.1)
9 – 14 V
Ignition switch ON, select lever in “P” range
17
RED
CAN communication
line (High)
*2.5 – 3.6 V
↑↓
1.6 – 2.5 V
Engine running at idling with after warming up.
(CAN communication signal is pulse. Pulse signal
frequency varies depending on engine condition.)
18
—
—
—
—
19
—
—
—
—
20
YEL/RED 3 position switch (+)
2.4 – 4.3 V
Ignition switch ON, select lever in “P”, “R”, “N” or “D”
range
0.8 – 2.4 V Ignition switch ON, select lever in “3”, “2” or “L” range
21
—
—
—
—
22
—
—
—
—
23
BLK
Ground
0 – 1 V
Ignition switch ON
24
WHT
Power source for back-
up
10 – 14 V Constantly
Automatic Transmission/Transaxle: 5A-82
Connector “E93”
Terminal Wire color
Circuit
Standard
voltage
Condition
1
RED
Transmission range
sensor (“R” range)
8 – 14 V
Ignition switch ON, selector lever at “R” range
0 – 1 V
Ignition switch ON, selector lever at other than “R”
range
2
—
—
—
—
3
—
—
—
—
4
PNK/WHT
4L/N switch (if
equipped)
8 – 14 V
Ignition switch ON, transfer position in 4H
0 – 1 V
Ignition switch OFF, transfer position in 4L and N
5
WHT
Output shaft speed
sensor (+)
0 – 1 V
Ignition switch ON, engine stops
While engine running.
(Output signal is waveform. Waveform frequency varies
depending on output shaft speed. (18 pulses are
generated par 1 input shaft revolution.))
6
BLU
Input shaft speed
sensor (+)
0 – 1 V
Ignition switch ON, engine stops.
While engine running.
(Output signal is waveform. Waveform frequency varies
depending on output shaft speed. (24 pulses are
generated par 1 input shaft revolution.))
7
GRN
Transmission range
sensor (“D” range)
8 – 14 V
Ignition switch ON, selector lever at “D” range
0 – 1 V
Ignition switch ON, selector lever at other than “D”
range
8
GRN/ORN
Transmission range
sensor (“N” range)
8 – 14 V
Ignition switch ON, selector lever at “N” range
0 – 1 V
Ignition switch ON, selector lever at other than “N”
range
9
—
—
—
—
10
—
—
—
—
11
—
—
—
—
12
—
—
—
—
13
—
—
—
—
14
ORN
Output shaft speed
sensor (–)
2 – 3 V
Ignition switch ON, engine at stop
15
—
—
—
—
16
PNK
Input shaft speed
sensor (–)
2 – 3 V
Ignition switch ON, engine at stop
17
—
—
—
—
18
GRN/WHT
Transmission range
sensor (“L” range)
8 – 14 V
Ignition switch ON, selector lever at “L” range
0 – 1 V
Ignition switch ON, selector lever at other than “L”
range
19
GRN/ORN
Transmission range
sensor (“2” range)
8 – 14 V
Ignition switch ON, selector lever at “2” range
0 – 1 V
Ignition switch ON, selector lever at other than “2”
range
20
PNK
Transmission range
sensor (“P” range)
8 – 14 V
Ignition switch ON, selector lever at “P” range
0 – 1 V
Ignition switch ON, selector lever at other than “P”
range
21
—
—
—
—
22
—
—
—
—
23
PPL/WHT Data link connector
8 – 14 V
Ignition switch ON
24
—
—
—
—
25
—
—
—
—
26
—
—
—
—
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