5A
DTC P0727 (No.35): Engine Speed Input Circuit No Signal (M13A Model without VVT)
Wiring Diagram
1. TCM [A]: Terminal arrangement of TCM connector (M13 engine model with VVT) (viewed from harness side)
2. ECM [B]: Terminal arrangement of TCM connector (M13 engine model without VVT) (viewed from harness side)
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
No engine speed signal is inputted for 5 seconds although input shaft speed sensor signals are detected.
• Engine speed input signal circuit malfunction.
• TCM
• ECM
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories.
3) Start engine and raise engine speed to 2500 rpm.
4) Keep engine speed of 2500 rpm for 10 seconds.
5) Release accelerator pedal and check DTC.
Troubleshooting
Step Action YES NO
1
Was A/T System Check performed?
Go to Step 2.
Go to A/T System Check .
2
Check Engine Speed Input Signal Circuit for Open
1) Turn ignition switch OFF.
2) Disconnect TCM and ECM connectors from TCM and ECM.
3) Check for proper connection to TCM at terminal “E124-15” and to ECM at terminal “E113-16”.
4) If OK, check continuity between terminals “E124-15” and “E113-16” of disconnected harness side TCM and ECM connectors.
Is continuity indicated?
Go to Step 3.
“BRN” circuit open.
3
Check Engine Speed Input Signal Circuit for Short
1) Check continuity between terminal “E124-15” of disconnected harness side TCM connector and ground.
Is continuity indicated?
“BRN” circuit shorted to ground.
Go to Step 4.
4
Check TCM Terminal Voltage
1) Connect TCM connectors to TCM with ignition switch OFF.
2) Turn ignition switch ON.
3) Measure voltage between terminal “E124-15” of connected harness side ECM connector and ground.
Is it 8 – 14 V?
Go to Step 5.
Substitute a known-good TCM and recheck.
5
Check ECM Terminal Voltage
1) Turn ignition switch OFF.
2) Connect ECM connectors to ECM.
3) Turn ignition switch ON.
4) Measure voltage between terminal “E113-16” of connected harness side ECM connector and ground.
Is it 0 – 1 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 and/or ECM recheck.
Substitute a known-good ECM and recheck.