412-00-34 Climate Control System — General Information 412-00-34
DIAGNOSIS AND TESTING (CONTINUED)
Measure the resistance at the relay between pin 3
and pin 5.
Is the resistance greater than 100 Kohm?
If yes, GO to 2.
If not, INSTALL a new relay.
2. Check relay contact in activated condition
Using a test cable and set up the test as in the
following description.
• Connect the battery positive terminal with the
relay, pin 2.
• Connect the battery negative terminal with the
relay, pin 1.
Measure the resistance at the relay between pin 3
and pin 5.
Does the relay switch (audible click) when battery
voltage is applied and is the resistance less than
1,0 ohm?
If yes, the relay is OK.
If not, INSTALL a new relay.
Relay – high speed engine cooling fan
1. Check the relay contacts in normal condition
Measure the resistance at the relay between pin 3
and pin 5 and between pin 3 and pin 2.
Is in both measures the resistance greater than
100 Kohm?
If yes, GO to 2.
If not, INSTALL a new relay.
2. Check relay contact (1) in activated condition
Using a test cable and set up the test as in the
following description.
• Connect the battery positive terminal with the
relay, pin 8.
• Connect the battery negative terminal with the
relay, pin 7.
Measure the resistance at the relay between pin 3
and pin 5.
Does the relay switch (audible click) when battery
voltage is applied and is the resistance less than
1,0 ohm?
If yes, GO to 3.
If not, INSTALL a new relay.
3. Check relay contact (2) in activated condition
Using a test cable and set up the test as in the
following description.
E9425 EN 07/2001 2002 Bantam
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