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DTC P0692 COOLING FAN 1 CONTROL CIRCUIT HIGH

DTC P0692 COOLING FAN 1 CONTROL CIRCUIT HIGH

DTC DETECTING CONDITION:


• Two consecutive driving cycles with fault

• GENERAL DESCRIPTION


TROUBLE SYMPTOM:


• Radiator fan does not operate properly.

• Overheating


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


CHECK OUTPUT SIGNAL FROM ECM.

Turn the ignition switch to OFF.

Connect the test mode connector at the lower portion of instrument panel (on the drive’s side).

Turn the ignition switch to ON.

While operating the radiator fan relay, measure voltage between ECM and chassis ground.

Note

Radiator fan relay operation can be executed using Vehicle Diagnostic Interface. For procedure, refer to “Compulsory Valve Operation Check Mode”.


Connector & terminal

(B134) No. 31 (+) — Chassis ground (−):

(B135) No. 34 (+) — Chassis ground (−):

Is the voltage 0 — 10 V?

Yes

Even if malfunction indicator light lights up, the circuit has returned to a normal condition at this time. In this case, repair poor contact in ECM connector.


No


CHECK SHORT CIRCUIT IN RADIATOR FAN RELAY CONTROL CIRCUIT.

Turn the ignition switch to OFF.

Remove the main fan relay and sub fan relay. (with A/C models)

Disconnect the test mode connector.

Turn the ignition switch to ON.

Measure the voltage between ECM and chassis ground.

Connector & terminal

(B134) No. 31 (+) — Chassis ground (−):

(B135) No. 34 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes

Repair battery short circuit in radiator fan relay control circuit. After repair, replace the ECM.


No


CHECK MAIN FAN RELAY.

Turn the ignition switch to OFF.

Remove the main fan relay.

Measure the resistance between main fan relay terminals.

Terminals

No. 30 — No. 31:

Is the resistance less than 1 Ω?

Yes

Replace the main fan relay and ECM.


No


CHECK SUB FAN RELAY.

Remove the sub fan relay.

Measure the resistance between sub fan relay terminals.

Terminals

No. 20 — No. 21:

Is the resistance less than 1 Ω?

Yes

Replace the sub fan relay and ECM.


No


CHECK POOR CONTACT.

Check poor contact in ECM connector.

Is there poor contact in ECM connector?

Yes

Repair poor contact in ECM connector.


No

Replace the ECM.