Dtc P0532 A/C Pressure Sensor Low Voltage - Daewoo CIELO EURO III Manual

creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
2. Normal ACP sensor signal voltage is between
0.1 and 4.9 volts. If A/C voltage is within range, re-
view Fail Records data to determine the conditions
that were present when DTC P0532 set.
6. The scan tool may not display 5 volts. The important
thing is that the ECM recognizes the voltage as
Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check complete?
With engine idling, install a scan tool.
2
Does the scan tool display Air Conditioning Pressure
(ACP) voltage below the specified value?
1. Turn the ignition switch OFF.
2. Disconnect the ACP sensor electrical connector.
3. Jumper the ACP signal circuit, terminal 3 to
the 5 volt reference circuit, terminal 1.
3
4. Turn the ignition switch on.
Does the ACP voltage read more than the specified
value?
1. Turn the ignition switch ON, with the engine OFF,
review the Freeze Frame data and note the
parameters.
2. Operate the vehicle within the freeze frame
4
conditions and Conditions For Setting the DTC as
noted.
Does the scan tool display ACP voltage below the
specified value?
Inspect the ACP sensor harness electrical connector
terminals for the following conditions:
D Poor connections
5
D Proper contact tension
D Poor terminal-to-wire connection
Is a problem found?
1. Turn the ignition switch OFF.
2. Remove the jumper wire.
3. Probe the ACP sensor signal circuit terminal
6
3 with a test light to B+.
4. Turn the ignition switch ON.
Does the scan tool read over the specified value?
Check the ACP sensor 5 volt reference circuit for an
open or short to ground.
7
Is a problem found?
Repair the connection terminals as necessary.
8
Is the action complete?
DAEWOO T-154 BL2,3

DTC P0532 A/C Pressure Sensor Low Voltage

Action
ENGINE CONTROLS 1F – 341
more than 4 volts, indicating that the ECM and
the signal circuit are OK. A test light that illuminates
indicates a short to ground in the signal circuit.
7. A short to ground in the 5 volt reference circuit could
also set additional DTCs.
11. The replacement ECM must be repro-
grammed. Refer to the latest Techline procedure for
ECM reprogramming.
Value
–
Go to Step 2
0.06 v Go to Step 3
4.9 v Go to Step 5
0.06 v Go to Step 3
–
Go to Step 8
4.0 v Go to Step 7
–
Go to Step 10
– Go to Step 14
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go Step 4
Go to Step 6
Go to
"Diagnostic
Aids"
Go to Step 9
Go to Step 12
Go to Step 11
–