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 |
Step | Action | YES | NO |
---|---|---|---|
1 |
Was
A/T System Check
performed?
|
Go to Step 2.
|
Go to
A/T System Check
.
|
2 |
Check Torque Reduction Signal Circuit for Open.
1)
Turn ignition switch OFF.
2)
Disconnect TCM and ECM connectors from TCM and ECM.
3)
Check continuity between terminal “E124-18” of disconnected harness side TCM connector and terminal “E113-12” of disconnected harness side ECM connector.
Is continuity indicated?
|
Go to Step 3.
|
“YEL” circuit open.
|
3 |
Check Torque Reduction Signal Circuit for Ground Short
Check continuity between terminal “E124-18” of disconnected harness side TCM connector and ground.
Is continuity indicated?
|
“YEL” circuit shorted to ground.
|
Go to Step 4.
|
4 |
Check Power Supply from ECM
1)
Connect ECM connectors to ECM.
2)
Turn ignition switch ON.
3)
Measure voltage between terminal “E113-12” of connected harness side ECM connector and ground.
Is it 9 –14 V?
|
Intermittent trouble or faulty TCM or ECM. Check for intermittent referring to
Intermittent and Poor Connection Inspection
. If OK, substitute a known-good TCM or ECM and recheck.
|
Faulty ECM.
|