Automatic Transmission/Transaxle: 5A-71
DTC P1895 (No. 27): Torque Reduction Signal Circuit Malfunction
S3RH0A5104037
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) After 1 minute passed from turning ignition switch ON, check DTC, pending DTC and freeze frame data, if
available.
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?
Go to Step 4.
“BLU/RED” circuit open.
4
Check engine torque signal circuit for ground short
1) Check continuity between terminal “G07-23” od
disconnected harness side TCM connector and ground.
Is continuity indicated?
“BLU/RED” circuit
shorted to ground.
Intermittent trouble or
faulty TCM or ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If OK, substitute a
known-good TCM or
ECM and recheck.
Step
Action
Yes
No
4
C41
G04
G03
12
18
G08
G07
12V
3
LT GRN/RED
G07-18
G03-12
2
1
I2RH0B510033-01
1. TCM
3. Terminal arrangement of TCM connector (viewed from harness side)
2. ECM
4. Terminal arrangement of ECM connector (viewed from harness side)
DTC detecting condition
Trouble area
Voltage of torque reduction signal circuit TCM terminal is low
although TCM does not require ECM to reduce engine
torque.
• Torque reduction signal circuit malfunction
• TCM
• ECM
Содержание Liana RH413
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