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If only the engine coolant temperature gauge
does not operate, the engine-ECU <M/T> or
engine-A/T-ECU <A/T> system, the combination meter,
the wiring harness or its connector may be defective.
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- Damaged harness wires and connectors
- Malfunction of engine-ECU <M/T> or
engine-A/T-ECU <A/T>
- Malfunction of combination meter
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Use the M.U.T.-III to diagnose the CAN bus
lines.
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Q.
Is the check result satisfactory?
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Repair the CAN bus lines (Refer
to GROUP 54F, Diagnosis - Can Bus Diagnostic Table ). After diagnosing the CAN bus
lines, go to Step 5.
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Check if an MPI system diagnosis code is
set.
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Q.
Is the diagnosis code set?
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Diagnose MPI system. (Refer to
GROUP 13A, Troubleshooting or GROUP 13B, Troubleshooting .) After diagnosing the MPI
system, go to Step 5.
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- Item No.8C: Water thermometer (Refer to
.)
- Item No.8E: Water thermometer definite flag (Refer to
.)
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Q.
Is the check result satisfactory?
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|
Diagnose MPI system. (Refer to
GROUP 13A, Troubleshooting or GROUP 13B, Troubleshooting .) After diagnosing the MPI
system, go to Step 5.
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- Item No.88: Water temperature gauge: 0 °C
- Item No.89: Water temperature gauge: 85 °C
- Item No.8A: Water temperature gauge: 126 °C
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OK: The water thermometer
operates.
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Q.
Is the check result satisfactory?
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Replace combination meter and
then go to step 5.
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Check to see that the engine coolant
temperature gauge operates normally.
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Q.
Is the check result satisfactory?
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|
The
procedure is complete.
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