Daewoo MATIZ Service Manual page 353

Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check complete?
3..Turn the ignition switch to LOCK.
2. Disconnect the A/C compressor relay.
2
3. Measure the resistance between A/C compressor
relay terminals 85 and 86.
Does the resistance within the specified value?
1. Turn the ignition switch to LOCK.
2. With the test light, connected to ground, probe
the ignition feed circuit, at terminal 86 in the relay
3
harness connector.
Does the test light illuminate?
Repair a short to battery voltage between the
ignition switch terminal and A/C compressor relay
4
terminal 86.
Is the repair complete?
1. Turn the ignition switch to LOCK.
2. Disconnect the ECM.
3. With the test light, connected to ground, probe
5
the ignition feed circuit, at terminal 86 in the relay
harness connector.
Does the test light illuminate?
Repair a short to battery voltage between the ECM
wiring connector terminal 38 and A/C compressor
6
relay terminal 85.
Is the repair complete?
Replace the A/C compressor relay.
7
Is the replacement complete?
1. Turn the ignition switch to LOCK.
8 2. Replace the ECM.
Is the repair complete?
1. Using the scan tool, clear the Diagnostic Trouble
Codes(DTCs)
2. Start the engine and idle at normal operating
temperature.
9
3. Operate the vehicle within the conditions for
setting this DTC as specified in the supporting
text.
Does the scan tool indicate that this diagnostic has
run and passed?
Check if any additional DTCs are set.
10
Are any DTCs displayed that that have not been
diagnosed?
DAEWOO M-150 BL2
DTC P1537 – A/C Compressor Relay High Voltage
Action
ENGINE CONTROLS 1F – 255
Value(s) Yes
–
Go to Step 2
0Ω Go to Step 3
–
Go to Step 5
–
Go to Step 9
–
Go to Step 8
–
Go to Step 9
–
Go to Step 9
–
Go to Step 9
–
Go to Step 10
Go to
applicable DTC
–
table
No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 7
Go to Step 4
–
Go to Step 6
–
–
–
Go to Step 2
System OK