Dtc P1895 (No.27): Torque Control Signal Malfunction - Suzuki Liana RH418 Supplementary Service Manual

5A-56 Automatic Transmission/Transaxle:
DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 Check engine torque signal circuit for IG short
1) Turn ignition switch OFF.
2) Disconnect TCM and ECM connectors from TCM and
ECM.
3) Check proper connection to TCM at terminal "G07-23"
and to ECM at terminal "G03-5".
4) If connection is OK, turn ignition switch ON and measure
voltage between terminal "G07-23" and ground.
Is it 10 – 14 V?
3 Check engine torque signal circuit for open
1) Turn ignition switch OFF.
2) Check continuity between terminal "G07-23" of
disconnected harness side TCM connector and terminal
"G03-5" of disconnected harness side ECM connector.
Is continuity indicated?
4 Check engine torque signal circuit for ground short
1) Check continuity between terminal "G07-23" of
disconnected harness side TCM connector and ground.
Is continuity indicated?

DTC P1895 (No.27): Torque Control Signal Malfunction

Wiring Diagram
2
1. TCM
2. ECM
Action
5V
G03-12 LT GRN/RED
G08
C41
3. Terminal arrangement of TCM connector (viewed from harness side)
4. Terminal arrangement of ECM connector (viewed from harness side)
Yes
Go to Step 2.
"BRN/YEL" circuit
shorted to power circuit.
Go to Step 4.
"BRN/YEL" circuit
shorted to ground
G07-18
G07
18
G04
12
No
Go to "A/T System
Check".
Go to Step 3.
"BRN/YEL" circuit open.
Intermittent trouble or
faulty TCM or ECM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section 00
in related manual". If
OK, substitute a known-
good TCM or ECM and
recheck.
S3RH0B5104037
1
3
G03
4
I3RH0B510021-01