FREEZE FRAME DATA
The IFI control module stores faults and ambient conditions at the moment the fault occurs. Freeze frame data is stored which was present when fault first occurred. Freeze frame data may be displayed on several screens. The following conditions may be identified with fault
- Voltage Too Low
- Voltage Too High
- Signal Too Small
- Signal Too Large
- Implausible Value
MISSING SIGNAL SUBSTITUTION
The IFI control module will substitute missing input signals based on other signals available to maintain system operation. Substitute values may result in intake Manifold Absolute Pressure (MAP) malfunction, EGR system malfunction, switching off anti-vibration control, cruise control malfunction, engine performance reduction, and reduction of maximum engine RPM.
Activation of Drive Authorization System (DAS) takes place only from Remote Control Locking (RCL) control module through Controller Area Network (CAN) to Inline Fuel Injection (IFI) control module. After activation of DAS, IFI control module makes fuel injection system inoperable. The DAS can only be activated using the Infrared Remote (IR) transmitter or master key.
The RCL control module and IFI control module are permanently matched to each other using an identification code. This identification code cannot be erased. Troubleshooting of an IFI control module or RCL control module by swapping modules from another vehicle cannot be performed.
If a new IFI control module is installed for testing purposes, a maximum of 40 engine starts can be performed before control modules are permanently matched (locked) to each other. After 40 engine starts, IFI control module is permanently assigned to vehicle and cannot be used in another vehicle.
Before first engine start, version coding must be performed on IFI control module using Hand Held Tester (HHT). After performing version coding, identification must be initiated. See VERSION CODING .
VERSION CODING
Note. Hand Held Tester (HHT) is necessary for performing version coding.
Version coding can be performed automatically or manually using Hand Held Tester (HHT).
Automatic Coding
Before removing IFI control module, using HHT, read existing version code. After installation of new IFI control module, enter previously read version code.
Manual Coding
If code number cannot be read, vehicle equipment and version must be determined. A corresponding code number must be obtained from Spare Parts Microfiche and manually entered with HHT. The following version data must be obtained for coding
- Vehicle Model
- ABS
- Manual Transmission
- 4-Speed Automatic Transmission
- With Cruise Control
- Without Cruise Control
- ETS
- Country Version
When returning a new control module, code number must be erased.
Using Hand Held Tester (HHT)
Turn ignition off. Connect HHT to 38-pin diagnostic connector located in engine compartment. (Scheme 28) Turn ignition on. Follow manufacturer's instructions for reading fault codes.
Scheme 28
FAULT CODE DEFINITION
After identifying malfunctioning component or system, see appropriate FAULT CODE DIAGNOSIS charts under DIAGNOSTIC TESTS .
Loose connections are stored if they occur several times over a certain time period. Fault codes caused by loose connections appear as stored fault codes and never as current fault codes.
Note. Generic scan tool will not identify all possible fault codes. It is recommended to use Hand Held Tester (HHT) for diagnosis.
Note. If no fault codes are displayed, there is no malfunction.
| HHT Code | Generic Scan Tool Code | Component and/or System | Test/Remedy |
|---|---|---|---|
| P0105 | P0105 | Pressure Sensor | FAULT CODE DIAGNOSIS P0110/P0111 & P0105 (STEP 5.1-6.1) |
| P0110 | P0111 | IAT Sensor | FAULT CODE DIAGNOSIS P0115 & P0110/P0111 (STEP 4.1-5.0) |
| P0115 | P0115 | ECT Sensor | FAULT CODE DIAGNOSIS P1610 & P0115 (STEP 3.0-4.0) |
| P0180 | P0181 | Fuel Temperature Sensor | FAULT CODE DIAGNOSIS P0180/P0181 (STEP 23.0-24.0) |
| P0400 | P0400 | EGR, Pressure Control Or Intake Manifold Press. | FAULT CODE DIAGNOSIS P0400 & P1470/P0120 (STEP 31.0-32.0) |
| P0500 | VSSP0600 | Fault code P0600 can be displayed even if no malfunction is present. CAN Data Bus | FAULT CODE DIAGNOSIS P1520 & P0500 (STEP 14.0-15.0) |
| P0703 | N/A | Stop Light Switch | FAULT CODE DIAGNOSIS P0703 (STEP 12.0-12.2) |
| P1105 | P0106 | Atmospheric Pressure Sensor In Control Module | * |
| P1220 | P0200 | Fuel Quantity Actuator Control Circuit | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1222 | P0220 | IFI Accelerator Pedal Position Sensor | FAULT CODE DIAGNOSIS P1222/P0220 & P1705 (STEP 10.0-11.0) |
| P1223 | P0200 | Fuel Rack Position Sensor | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1335 | P0725 | CKP Sensor | FAULT CODE DIAGNOSIS P1335/P0725 (STEP 7.0-7.1) |
| P1401 | P0403 | EGR Lifting Sensor | FAULT CODE DIAGNOSIS P1401/P0403 (STEP 29.0-30.1) |
| P1470 | P0120 | Pressure Control Flap Vacuum Transducer | FAULT CODE DIAGNOSIS P0400 & P1470/P0120 (STEP 31.0-32.0) |
| P1475 | P0200 | Resonance Intake Line Switchover Valve | FAULT CODE DIAGNOSIS P0600 & P1475/P0200 (STEP 25.0-26.1) |
| P1476 | P0200 | Resonance Intake Manifold Switchover Valve | FAULT CODE DIAGNOSIS P1476/P0200 (STEP 27.0-28.0) |
| P1480 | P0380 | Preglow Control | FAULT CODE DIAGNOSIS P1480/P0380 & P1480/P0380 (STEP 1.0-2.2) |
| P1520 | N/A | Cruise Control Switch | FAULT CODE DIAGNOSIS P1520 & P0500 (STEP 14.0-15.0) |
| P1610 | N/A | Voltage Supply Missing Or Relay Module | FAULT CODE DIAGNOSIS P1610 & P0115 (STEP 3.0-4.0) |
| P1611 | P0200 | IFI Control Module | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1612 | N/A | IFI Control Module Voltage (Circuit 15) | FAULT CODE DIAGNOSIS P1612 & P1615 (STEP 1.0-2.0) |
| P1613 | P0200 | IFI Control Module | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1614 | P0200 | IFI Control Module, Fuel Metering Actuator Or Fuel Rack Position Sensor | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1615 | N/A | IFI Control Module Supply Voltage | FAULT CODE DIAGNOSIS P1612 & P1615 (STEP 1.0-2.0) |
| P1617 | P0200 | Control Module Or Not Coded | FAULT CODE DIAGNOSIS P1220/P1614/P0200 & P1223/P1614/P0200 (STEP 8.0-9.2) |
| P1622 | P0200 | Electrohydraulic Shut-Off Actuator | FAULT CODE DIAGNOSIS P1622/P0200 (STEP 22.0-22.2) |
| P1625 | N/A | CHECK ENGINE Malfunction Indicator Light (MIL) | Fault Code Diagnosis P1625 (Step 17.0) |
| P1630 | N/A | Drive Authorization Signal | * |
| P1705 | N/A | Starter Lock-Out/Back-Up Light Switch | FAULT CODE DIAGNOSIS P1222/P0220 & P1705 (STEP 10.0-11.0) |
| P1780 | N/A | Modulating Pressure Switchover Valve Or Upshift Delay Switchover Valve | * |
| P1781 | N/A | Upshift Delay Switchover Valve | FAULT CODE DIAGNOSIS P1700 & P1781 (STEP 19.0-21.1) |
| (1) If no fault codes are displayed, there is no malfunction. (2) Fault code P0600 can be displayed even if no malfunction is present. | |||
| (1) | If no fault codes are displayed, there is no malfunction. |
| (2) | Fault code P0600 can be displayed even if no malfunction is present. |
DIAGNOSTIC TROUBLE CODE LIST
CLEARING CODES
Disconnecting vehicle battery will not erase codes. Following scan tool equipment manufacturer's instructions, erase fault codes.
TERMINOLOGY
System components and connections are identified by the manufacturer with special designations in diagnostic information. See the COMPONENT IDENTIFICATION table.
| Component | Manufacturer's Designation |
|---|---|
| ABS Control Module | N30 |
| Check Engine MIL | A1e26 |
| Closed Throttle Position Contact Switch | R25/2s1 |
| Component Compartment Ground (Left) | W16/3 |
| Component Compartment Ground (Right) | W16/6 |
| Crankshaft Position (CKP) Sensor | L5/6 |
| Crankshaft Position (CKP) Sensor Connector | L5/6x1 |
| Cruise Control Switch | S40 |
| ECT Sensor | B11/4 |
| EGR Lifting Sender | B28/3 |
| EGR Valve Vacuum Transducer | Y31/1 |
| Electrohydraulic Shut-Off Actuator | Y1/1 |
| Fuel Rack Position Sensor | Y23/1/1 |
| Fuel Rack Position Sensor Connector | Y23/1/1x1 |
| Fuel Temperature Sensor | Y1/1b1 |
| Fuel Quantity Actuator | Y23/1 |
| Fuel Quantity Actuator Connector | Y23/1x1 |
| IAT Sensor | B17 |
| IFI Accelerator Pedal Position Sensor | R25/2 |
| IFI Control Module | N3/7 |
| Modulating Pressure Switchover Valve | Y3/4 |
| Pressure Control Flap Vacuum Transducer | Y31/2 |
| Pressure Sensor | B28 |
| Relay Module | K40 |
| Resonance Intake Line Switchover Valve | Y22/7 |
| Resonance Intake Manifold Switchover Valve | Y22/6 |
| Starter Lock-Out/Backup Light Switch | S16/1 |
| Stop Light Switch | S9/1 |
| Upshift Delay Switchover Valve | Y3/5 |
COMPONENT IDENTIFICATION
PREGLOW SYSTEM
The preglow time-limit relay module has a short circuit protection feature. If a short occurs in glow plug wiring or glow plugs, current is interrupted. The preglow time-limit relay module is operational again if short is eliminated or glow/starter switch is turned to position "O". A malfunctioning glow plug will be identified by an illuminated preglow indicator light. For symptom diagnostic information relating to preglow system (Scheme 29)
