Mercedes-Benz Sprinter 2003 Manual page 147

AUX FAN RELAY CONTROL HIGH OR OPEN (ACTIVE) —
TEST
4 Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Reconnect the Automatic Temperature Control (ATC) C1 harness connector.
Install a substitute relay in place of the A/C Auxiliary Fan Relay.
Turn the ignition on.
With the DRBIII , erase Automatic Temperature Control DTCs.
Turn the ignition off, wait 5 seconds, then turn the ignition on.
With the DRBIII , read Automatic Temperature Control DTCs.
Does the DRBIII display: AUX FAN RELAY CONTROL HIGH OR OPEN?
Yes → Replace the Automatic Temperature Control (ATC) in accordance
→ Replace the original A/C Auxiliary Fan Relay in accordance with
No
ACTION
with the Service Information. Reinstall the original A/C Auxiliary
Fan Relay.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
139
HEATING & A/C
Continued
APPLICABILITY
All