Inspection of TCM and Its Circuits: Notes
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.
- Remove TCM (1) from vehicle referring to TRANSMISSION CONTROL MODULE (TCM) REMOVAL AND INSTALLATION .
- Connect TCM connectors (2) to TCM.
- 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.
Connector "E92"
TCM CONNECTOR E92 TERMINAL REFERENCETerminal 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
(REFERENCE WAVEFORM NO. 1 )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
(REFERENCE WAVEFORM NO. 2 )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
(REFERENCE WAVEFORM NO. 3 )Engine running at idling with after warming up.
(CAN communication signal is pulse. Pulse signal frequency varies depending on engine condition.))8 - - - - 9 LT GRN/RED No internal connection 10 - - - - 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 GRN/BLK No internal connection 15 GRN/RED Shift solenoid valve-B 9 - 14 V Ignition switch ON, select lever in "P" range 16 GRN Shift solenoid valve-A 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
(REFERENCE WAVEFORM NO. 3 )Engine running at idling with after warming up.
(CAN communication signal is pulse. Pulse signal frequency varies depending on engine condition.)18 - - - - 19 BRN/BLU No internal connection 20 - - - - 21 LT GRN No internal connection 22 LT GRN/BLK No internal connection 23 BLK/ORN Ground 0 - 1 V Ignition switch ON 24 WHT Power source for backup 10 - 14 V Constantly Connector "E93"
TCM CONNECTOR E93 TERMINAL REFERENCETerminal 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 * (REFERENCE WAVEFORM NO. 4 ) 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. * (REFERENCE WAVEFORM NO. 5 ) 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 YEL/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 PNK/BLU 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 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 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/GRN 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 YEL/BLK 3 position switch (-) 0 - 1 V Ignition switch ON 22 - - - - 23 - - - - 24 - - - - 25 - - - - 26 - - - -