ECC Without A/C Function

NOTE: The fault may either be in the component itself or in the associated wiring. Figures in brackets refer to wiring diagrams.

Displaying DTCs
Each DTC consists of three digits, each indicated by a corresponding number of flashes. An interval occurs between each digit (series of flashes) before the next digit is displayed.





Example: DTC 231 Is indicated by 2 flashes - 3 flashes - 1 flash

Three different DTCs can be stored simultaneously in the memory.

DTCs are stored whether the fault is intermitent or permanent.


NOTE: The DTCs are erased when the ignition is switched off.


When the ignition is again switched on and a DTC request is made, only those DTCs in the memory at that time are displayed.

Thus, DTCs for intermittent faults can disappear when the ignition is switched off.

Only one DTC at a time is displayed on request. For this reason, several requests must be made to ensure that no DTC is missed.

If several DTCs are stored, they will be displayed repeatedly. For example:
3 DTCs:
DTC 1, DTC 2, DTC 3, DTC 1, DTC 2, etc.

2 DTCs:
DTC 1, DTC 2, DTC 1, DTC 2, etc.

1 DTC:
DTC 1, DTC 1, DTC 1, etc.

Fault DTC
No fault detected by diagnostic system 111

Ambient temperature sensor on blower housing (7/11)
Short-circuit to ground 121
Open-circuit/short-circuit to 12 V 122

Interior temperature sensor in roof light (7/10)
Short-circuit to ground 131
Open-circuit/short-circuit to 12 V 132

Coolant temperature sensor, heater (7/9)
Short-circuit to ground 141
Open-circuit/short-circuit to 12 V 142

Generator (6/26)
D+ signal level fault 151

Solar sensor in loudspeaker grille (7/12) 161


NOTE: Shine lamp on sensor.


Servomotor/potentiometer (6/27)
Open-circuit/short-circuit to ground 211
Short-circuit to 12 V 212
Supply voltage too high (12 V) 213
Motor activated for too long
(blocked motor/open-circuit in supply) 214

ECC control panel (4/6)
Faulty temperature control 231

Fault DTC
Blower motor (6/28)
High starting current
(motor turns sluggishly/seizes) 233

Solenoid valves (8/2)
Terminal incorrectly connected to 12 V as follows:
Water valve 241
B/L 242
Vent 243
Rec 244
Defr 245
Floor 246

Max. blower relay (2/10) 247

FC relay (2/11) 249