Dodge ZB 2005 Service Manual page 1246

P0505-IDLE AIR CONTROL MOTOR CIRCUITS —
TEST
3 Note: The following steps are checking for a short between the IAC Driver
circuits.
Measure the resistance between the (K60) IAC #2 Driver circuit and #3, #4 Driver
circuits.
Is the resistance below 100 ohms on any of the Drivers?
Yes → Repair the shorted between the IAC Driver circuits.
→ Go To 4
No
4 Note: The following steps are checking for a short between the Driver
Circuits.
Measure the resistance between the (K39) IAC #3 Driver circuit and the (K59) IAC
#4 Driver circuit.
Is the resistance below 100 ohms?
Yes → Repair the short between the IAC Driver circuits.
→ Go To 5
No
5 Remove the ASD Relay.
Using a jumper wire, jumper between the Fused B+ circuit and ASD Relay Output
circuit in the PDC.
Ignition on, engine not running with the PCM and IAC harness connectors discon-
nected.
Measure the voltage on each of the IAC Driver circuits.
Is the voltage above 1.0 volt at any IAC Driver circuit?
Yes → Repair the short to voltage on the appropriate IAC Driver circuit.
→ Go To 6
No
NOTE: Remove the jumper wire and install the ASD Relay before continu-
ing.
6 Turn the ignition off.
Repeat each measurement for each IAC Driver circuit.
Measure the resistance between ground and each IAC Driver circuit.
Is the resistance below 100 ohms at any IAC Driver circuit?
Yes → Repair the short to ground in the appropriate IAC Driver circuit.
→ Go To 7
No
7 Turn the ignition off.
Connect the PCM harness connectors.
Start and idle the engine.
Using a test light connected to ground, probe the IAC Driver #1 circuit for 10 seconds.
Repeat the above test for the remaining IAC Motor Driver circuits.
Does the test light turn on and off while probing each IAC Motor Driver circuits?
Yes → Test Complete.
→ Replace and program the Powertrain Control Module per Service
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
Continued
125
APPLICABILITY
All
All
All
All
All