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Powertrain Interface Module – V6 Page 6E1–4
Conditions for Setting the DTC........................................................................................................................... 56
Conditions for Clearing the DTC ................................................................................................ ........................ 56
Additional Information......................................................................................................................................... 56
DTC P0633 Diagnostic Table..................................................................................................... .......................... 56
9.15 DTC P1611 – Wrong Security Code Entered........................................................................................ .............. 57
DTC Description ................................................................................................................................................... 57
Circuit Description ............................................................................................................................................... 57
Additional Information......................................................................................................... ................................ 57
Conditions for Running the DTC ................................................................................................. ....................... 58
Conditions for Setting the DTC........................................................................................................................... 58
Action Taken When the DTC Sets ................................................................................................. ..................... 58
Conditions for Clearing the DTC ........................................................................................................................ 58
Test Description ................................................................................................................................................... 58
DTC P1611 Diagnostic Table..................................................................................................... .......................... 58
9.16 DTC B0981 – 3rd Start Switch Signal Malfunction ............................................................................................. 59
DTC Description ................................................................................................................................................... 59
Circuit Description ............................................................................................................................................... 59
Additional Information......................................................................................................... ................................ 59
Conditions for Running the DTC ................................................................................................. ....................... 59
Conditions for Setting the DTC........................................................................................................................... 60
Action Taken When the DTC Sets ................................................................................................. ..................... 60
Conditions for Clearing the DTC ........................................................................................................................ 60
Test Description ................................................................................................................................................... 60
DTC B0980 Diagnostic Table ..................................................................................................... ......................... 60
10 Diagnostics For Non DTC Faults ................................................................................................. .......62
10.1 PRND32L Display Diagnostics ............................................................................................... ................................ 62
Circuit Description ............................................................................................................................................... 62
Additional Information......................................................................................................... ................................ 62
Test Description ................................................................................................................................................... 62
PRND32L Display Diagnostic Table ............................................................................................... .................... 63
10.2 Warning Signal and Status Indicators Diagnostics.......................................................................... .................... 64
Circuit Description ............................................................................................................................................... 64
Additional Information......................................................................................................... ................................ 64
Test Description ................................................................................................................................................... 64
Hard-wired Warning Signals ..................................................................................................... .......................... 65
Warning Signal and Status Indicator Diagnostic Table ........................................................................... ......... 65
10.3 Tachometer Diagnostics......................................................................................................................................... 67
Circuit Description ............................................................................................................................................... 67
Additional Information......................................................................................................... ................................ 67
Test Description ................................................................................................................................................... 67
Tachometer Diagnostic Table .................................................................................................... ......................... 67
10.4 Temperature Gauge Diagnostics ............................................................................................. .............................. 69
Circuit Description ............................................................................................................................................... 69
Additional Information......................................................................................................... ................................ 69
Test Description ................................................................................................................................................... 69
Temperature Gauge Diagnostic Table ............................................................................................. .................. 70
11 Service Operations ...............................................................................................................................71
11.1 Safety and Precautionary Measures .................................................................................................................. 71
11.2 Powertrain Interface Module ............................................................................................................................... 71
Remove ................................................................................................................................................................. 72
Reinstall ................................................................................................................................................................ 72
11.3 Vertical Acceleration Sensor ................................................................................................... ........................... 73
Remove ................................................................................................................................................................. 73
Reinstall ................................................................................................................................................................ 73
12 PIM Security and Programming ................................................................................................... .......74
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Page 3666 of 6020

Powertrain Interface Module – V6 Page 6E1–5
12.1 Security and Programming Information............................................................................................................. 74
Car Pass Card ...................................................................................................................................................... 74
Security Code ....................................................................................................................................................... 74
Tech 2 PIM Security Information Data List ...................................................................................... .................. 74
12.2 PIM Reset Procedure ........................................................................................................................................... 75
12.3 PIM Configuration ................................................................................................................................................ 76
Configuring the PIM ............................................................................................................ ................................. 76
Programming the VIN ............................................................................................................ .............................. 76
12.4 Immobiliser Link to ECM / PIM .................................................................................................. .......................... 77
13 Powertrain Interface Module – Tech 2 Functions .............................................................................79
13.1 Introduction .......................................................................................................................................................... 79
13.2 Tech 2 Functions ............................................................................................................... .................................. 79
F0: Diagnostic Trouble Codes ................................................................................................... ......................... 79
F1: Diagnostic Data Display................................................................................................................................ 79
F2: Snapshot Options.......................................................................................................................................... 80
F3: Miscellaneous Tests........................................................................................................ .............................. 80
F4: Additional Functions ..................................................................................................................................... 80
F5: Program .......................................................................................................................................................... 80
F6: Security .......................................................................................................................................................... 80
13.3 Powertrain Interface Module Data List .......................................................................................... ..................... 81
Diagnostic Data Display ...................................................................................................................................... 81
13.4 Miscellaneous Tests ............................................................................................................................................ 82
F0: Warnings ........................................................................................................................................................ 82
F1: Status Indicators .......................................................................................................... ................................. 82
F2: Gauge Control Tests ........................................................................................................ ............................. 82
13.5 Security................................................................................................................................................................. 83
F0: Immobiliser Link To ECM/PIM ................................................................................................ ...................... 83
F1: Reset PIM ....................................................................................................................................................... 83
F2: Security Information ....................................................................................................... ............................... 83
14 Specifications .......................................................................................................................................85
15 Torque Wrench Specifications................................................................................................... .........86
16 Special Tools ........................................................................................................................................87
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Powertrain Interface Module – V6 Page 6E1–6
1 General Information
A powertrain interface module (PIM) is fitted that incorporates the following functionality:
• Communication protocol between the engine control module (ECM) and transmission control module (TCM) is
General Motors Local Area Network (GM LAN).
• Communication protocol between the PIM and immobiliser control unit is keyword 2000.
• ECM to PIM and PIM to immobiliser control unit (ICU) authentication for vehicle security.
• The following switches, where fitted, input directly into the PIM:
• Automatic transmission power mode switch.
• Automatic transmission 3
rd gear start switch.
• Cruise control switch.
1.1 General Description
Serial Data Communication
The various electronic control modules communicate with each other through the serial data bus. The ECM and TCM
communicate on the serial data bus using the GM LAN communication protocol. Figure 6E1 – 2 shows the serial data
layout.
NOTE
Serial data components shown in Figure 6E1 – 2
will vary depending on vehicle options.
Bus
A bus is a physical circuit or circuits which provides a communication path between two or more control modules.
GM LAN Serial Data Bus
The GM LAN bus is a two wire circuit (1), refer to Figure 6E1 – 1. The GM LAN bus circuits are terminated with cut-off
resistors (2) which are located inside the two control modules at either end of the bus circuit. The purpose of these cut-off
resistors is to prevent data from returning as an echo after reaching the end of the GM LAN bus circuit.
NOTE
• For illustration purposes, the cut-off resistors
are shown outside of the control modules.
• The two control modules with the cut-off
resistors are the PIM and the ECM.
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Powertrain Interface Module – V6 Page 6E1–7
Figure 6E1 – 1
Legend
1 CAN Bus Lines
2 Cut-off Resistors (resistors are integrated into the PIM and ECM)
3 Powertrain Interface Module (PIM) 4 Transmission Control Module (TCM)
5 Engine Control Module (ECM)
Serial Data
W hen information is sent from one control module to another via the serial data bus, the information sent is known as
serial data. Serial data in its electronic form, is made up of rapidly changing high to low voltage pulses strung together.
Each string of voltage pulses represents a message.
• GM LAN serial data has two data lines along which serial data is sent. These lines are known as CAN_HI and
CAN_LO.
• CAN HI – The CAN HI data line is a 3.6 V data line that toggles the voltage between 2.5 V and 3.6 V
(referenced to ground). W hen there is no communication on the CAN HI data line, the system voltage
is 2.5 V.
• CAN LO – The CAN LO data line is a 2.5 V data line that toggles the voltage between 2.5 V and 1.4 V
(referenced to ground). W hen there is no communication on the CAN LO data line, the system voltage
is 2.5 V.
Serial Data Communication Protocols
General Motors Local Area Network (GM LAN)
GM LAN is a communication protocol based on the Controller Area Network physical layer. The main difference between
GM LAN and CAN is the way in which the messages are structured.
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Powertrain Interface Module – V6 Page 6E1–8
Serial Data Layout
Figure 6E1 – 2
Legend
1 Powertrain Interface Module (PIM)
2 Transmission Control Module (TCM)
3 Engine Control Module (ECM)
4 Immobiliser Control Unit (ICU)
5 Data Link Connector
A GM LAN Serial Data Circuit
B Keyword 2000 Serial Data Circuit
NOTE
Serial data Components shown in Figure 6E1 – 2
will vary depending on vehicle options.
1.2 Warning Caution and Notes
This Section contains various W ARNINGS, CAUTIONS and NOTE statements that you must observe carefully to reduce
the risk of death or injury during service, repair procedures or vehicle operation. Incorrect service or repair procedures
may damage the vehicle or cause operational faults. W ARNINGS, CAUTION and NOTE statements are not exhaustive.
GM HOLDEN LTD can not possibly warn of all the potentially hazardous consequences of failure to follow these
instructions.
Definition of WARNING, CAUTION and NOTE Statements
Diagnosis and repair procedures in this Section contain both general and specific W ARNING, CAUTION and NOTE
statements. GM HOLDEN LTD is dedicated to the presentation of service information that helps the technician to
diagnose and repair the systems necessary for proper operation of the vehicle. Certain procedures may present a hazard
to the technician if they are not followed in the recommended manner. W ARNING, CAUTION and NOTE statements are
designed to help prevent these hazards from occurring, but not all hazards can be foreseen.
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Powertrain Interface Module – V6 Page 6E1–9
WARNING defined
A W ARNING statement immediately precedes an operating procedure or maintenance practice which, if not correctly
followed, could result in death or injury. A W ARNING statement alerts you to take necessary action or not to take a
prohibited action. If a W ARNING statement is ignored, the following consequences may occur:
• Death or injury to the technician or other personnel working on the vehicle,
• Death or injury to other people in or near the workplace area, and / or
• Death or injury to the driver / or passenger(s) of the vehicle or other people, if the vehicle has been improperly
repaired.
CAUTION defined
A CAUTION statement immediately precedes an operating procedure or maintenance practice which, if not correctly
followed, could result in damage to or destruction of equipment, or corruption of data. If a CAUTION statement is ignored,
the following consequences may occur:
• Damage to the vehicle,
• Unnecessary vehicle repairs or component replacement,
• Faulty operation or performance of any system or component being repaired,
• Damage to any system or components which depend on the proper operation of the system or component being
repaired,
• Faulty operation or performance of any systems or components which depend on the proper operation or
performance of the system or component under repair,
• Damage to fasteners, basic tools or special tools and / or
• Leakage of coolant, lubricant or other vital fluids.
NOTE defined
A NOTE statement immediately precedes or follows an operating procedure, maintenance practice or condition that
requires highlighting. A NOTE statement also emphasises necessary characteristics of a diagnostic or repair procedure.
A NOTE statement is designed to:
• Clarify a procedure,
• Present additional information for accomplishing a procedure,
• Give insight into the reasons for performing a procedure in the recommended manner, and / or
• Present information that gives the technician the benefit of past experience in accomplishing a procedure with
greater ease.
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Powertrain Interface Module – V6 Page 6E1–10
2 Component Location
2.1 Engine Compartment
Figure 6E1 – 3
Legend
1 Engine Control Module (ECM) 2 Vehicle Acceleration Sensor
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Powertrain Interface Module – V6 Page 6E1–11
2.2 Interior
Figure 6E1 – 4
Legend
1 Cruise Control Switch Assembly
2 Power Mode Switch – Automatic Transmission
3 3
rd Start Switch – Automatic Transmission
4 Immobiliser Control Unit (ICU)
5 Powertrain Interface Module (PIM)
6 Transmission Control Module (TCM)
NOTE
Components shown in Figure 6E1 – 4 will vary
depending on vehicle options.
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