Mariner 2WD L4-2.5L (2009)
Pinpoint Tests
Pinpoint Test Q: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool or No ISO 9141 network communication
Normal Operation
The Parking Aid Module (PAM) communicates with the scan tool through the ISO 9141 communications network, circuit VDB10 (GY). The PAM is the
only module which communicates on the ISO 9141. Voltage for the PAM is provided by circuit CBP35 (YE/GY). Ground is provided by circuit GD182
(BK/GY).
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
PAM
PINPOINT TEST Q: THE PAM DOES NOT RESPOND TO THE SCAN TOOL OR NO ISO 9141 NETWORK COMMUNICATION
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
-------------------------------------------------
Q1 CHECK THE DLC PINS FOR DAMAGE
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the Pinpoint
Test. See: Initial Inspection and Diagnostic Overview/Communications Network/Inspection And Verification
-
Ignition OFF.
-
Disconnect the scan tool cable from the DLC.
-
Inspect the DLC pin 7 for damage.
-
Is the DLC pin 7 OK?
Yes
GO to Q2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
-------------------------------------------------
Q2 CHECK THE PAM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
-
Disconnect: PAM C4014.
-
Ignition ON.
-
Measure the voltage between the PAM C4014-1, circuit CBP35 (YE/GY), harness side and ground.
