Inspection of TCM and Its Circuits: Inspection

WARNING: This page is about a different car, the 2004 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.

Remove TCM (1) from vehicle referring to TRANSMISSION CONTROL MODULE (TCM) REMOVAL AND INSTALLATION .
Connect TCM connectors (2) to TCM.
Check voltage at each terminal of connectors connected.

NOTE: As each terminal voltage is affected by battery voltage, confirm that it is 11 V or more when ignition switch is ON.

Fig 1: Terminal arrangement of TCM coupler (Viewed from harness side)

G00761503

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Fig 2: Identifying Terminal Connector E228 Pin Voltage Chart (1 Of 3)

G00761504

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Fig 3: Identifying Terminal Connector E228 Pin Voltage Chart (2 Of 3)

G00761505

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Fig 4: Identifying Terminal Connector E228 Pin Voltage Chart (3 Of 3)

G00761506

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Fig 5: Identifying Terminal Connector E229 Pin Voltage Chart

G00761507

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Reference waveform No. 1
Pressure control solenoid valve-C signal at ignition switch ON position

Fig 6: Measuring Reference Waveform No.1 (1 Of 2)
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Fig 7: Measuring Reference Waveform No.1 (2 Of 2)
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Reference waveform No. 2
Pressure control solenoid valve-A signal at ignition switch ON position

Fig 8: Measuring Reference Waveform No. 2 (1 Of 2)
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Fig 9: Measuring Reference Waveform No. 2 (2 Of 2)
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Reference waveform No. 3
Input shaft speed sensor signal at engine idling

Fig 10: Measuring Reference Waveform No. 3 (1 Of 2)
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Fig 11: Measuring Reference Waveform No. 3 (2 Of 2)
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Reference waveform No. 4
Output shaft speed sensor signal at vehicle speed 20 km/h, 12.5 mile/h

Fig 12: Measuring Reference Waveform No. 4 (1 Of 2)
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Fig 13: Measuring Reference Waveform No. 4 (2 Of 2)
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Reference waveform No. 5
Pressure control solenoid valve-B signal at ignition switch ON position

Fig 14: Measuring Reference Waveform No. 5 (1 Of 2)
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Fig 15: Measuring Reference Waveform No. 5 (2 Of 2)
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Reference waveform No. 6
TCC solenoid valve signal at ignition switch ON position

Fig 16: Measuring Reference Waveform No. 6 (1 Of 2)
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Fig 17: Measuring Reference Waveform No. 6 (2 Of 2)
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Reference waveform No. 7
CAN communication line signal at engine idling

Fig 18: Measuring Reference Waveform No. 7 (1 Of 2)
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Fig 19: Measuring Reference Waveform No. 7 (2 Of 2)
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