DETERMINING SHORT BETWEEN CIRCUITS LOCATION (CAN-BUS No.3) [TYPE-B (R.H.D.)]
id100271002800
System Wiring Diagram
ac9wzw00006137
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Determination Procedure
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Step |
Inspection |
Action |
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1
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INSPECT BETWEEN GATEWAY UNIT (GWU) AND DLC-2 FOR SHORT BETWEEN CIRCUITS
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S.
• Inspect for continuity between gateway unit (GWU) terminals 3T and 3S (wiring harness side).
• Is there continuity?
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Yes
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Repair or replace the wiring harness between gateway unit (GWU) and DLC-2 because the wiring harness is shorted between circuits.
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No
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Go to the next step.
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2
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INSPECT GATEWAY UNIT (GWU) FOR SHORT BETWEEN CIRCUITS
• Disconnect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q.
• Connect the negative battery cable.
• Switch the ignition ON (engine off).
• Measure the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side).
• Is the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side) the same?
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Yes
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Go to the next step.
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No
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Replace the gateway unit (GWU) because there is a short between circuits in the gateway unit (GWU).
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3
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INSPECT BETWEEN GATEWAY UNIT (GWU) AND CONNECTOR C-13 FOR SHORT BETWEEN CIRCUITS
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the connector C-13.
• Connect the connector 3 which has gateway unit (GWU) terminals 3T and 3S.
• Connect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q.
• Connect the negative battery terminal.
• Switch the ignition ON (engine off).
• Measure the voltage at DLC-2 terminals F and E.
• Is the voltage at DLC-2 terminals F and E the same?
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Yes
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Repair or replace the wiring harness between gateway unit (GWU) and connector C-13 because the wiring harness is shorted between circuits.
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No
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Go to the next step.
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4
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INSPECT BETWEEN CONNECTOR C-13 AND CONNECTORS C-74, C-75 FOR SHORT BETWEEN CIRCUITS
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the connectors C-74, C-75.
• Connect the connector C-13.
• Connect the negative battery terminal.
• Switch the ignition ON (engine off).
• Measure the voltage at DLC-2 terminals F and E.
• Is the voltage at DLC-2 terminals F and E the same?
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Yes
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Repair or replace the wiring harness between connector C-13 and connectors C-74, C-75 because the wiring harness is shorted between circuits.
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No
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Go to the next step.
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5
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INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTORS C-74, C-75 FOR SHORT BETWEEN CIRCUITS
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Inspect for continuity between audio amplifier terminals 1N and 1M. (with Bose® type audio)
• Inspect for continuity between audio amplifier terminals 1Q and 1S. (without Bose® type audio)
• Is there continuity?
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Yes
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Go to the next step.
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No
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Go to Step 7.
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6
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INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS
• Disconnect the audio amplifier connector.
• Inspect for continuity between audio amplifier terminals 1N and 1M (wiring harness side). (with Bose® type audio)
• Inspect for continuity between audio amplifier terminals 1Q and 1S (wiring harness side). (without Bose® type audio)
• Is there continuity?
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Yes
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Repair or replace the wiring harness between the audio amplifier and connectors C-74, C-75 because the wiring harness is shorted between circuits.
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No
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Replace the audio amplifier because there is a short between circuits in the audio amplifier.
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7
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INSPECT BETWEEN 360° VIEW MONITOR CONTROL MODULE AND CONNECTORS C-74, C-75 FOR SHORT BETWEEN CIRCUITS
• Inspect for continuity between 360° view monitor control module terminals 1C and 1A.
• Is there continuity?
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Yes
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Go to the next step.
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No
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Go to Step 9.
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8
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INSPECT 360° VIEW MONITOR CONTROL MODULE FOR SHORT BETWEEN CIRCUITS
• Disconnect the audio 360° view monitor control module.
• Inspect for continuity between 360° view monitor control module terminals 1C and 1A (wiring harness side).
• Is there continuity?
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Yes
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Repair or replace the wiring harness between the 360° view monitor control module and connectors C-74, C-75 because the wiring harness is shorted between circuits.
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No
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Replace the 360° view monitor control module because there is a short between circuits in the 360° view monitor control module.
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9
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INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-13 FOR SHORT BETWEEN CIRCUITS
• Disconnect the connector C-13.
• Connect the negative battery terminal.
• Switch the ignition ON (engine off).
• Measure the voltage at connectivity master unit (CMU) terminals 1Q and 1O (wiring harness side).
• Is the voltage at connectivity master unit (CMU) terminals 1Q and 1O (wiring harness side) the same?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness between connectors C-74, C-75 and connector C-13 because the wiring harness is shorted between circuits.
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10
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INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the connectivity master unit (CMU).
• Inspect for continuity between connectivity master unit (CMU) terminals 1Q and 1O (wiring harness side).
• Is there continuity?
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Yes
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Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-13 because the wiring harness is shorted between circuits.
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No
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Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU).
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