T8 / P0691 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Radiator fan malfunction.
No A/C function.
Torque Reduction
Cooling Fan 1 Control Circuit, Open/Short to Ground
Fault symptom
Radiator fan malfunction.
No A/C function.
Torque Reduction
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Battery voltage must be between 11 - 16 V. |
Fault criteria:
| When voltage on the output is below 2.0 V for more than 1 s. |
Dependent:
System reaction to a fault:
| Switches off output to A/C relay. |
| Engine torque limitation (which is a function of vehicle speed, intake air temperature and number of incorrect fan stages). |
OK report:
| Fault criteria NOT fulfilled for 5 s. |
Fault handling:
| Type III without Check Engine. |
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Diagnosis regards:
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
