Test sequence
- Disconnect 3-pin connectors from Camshaft Position (CMP) sensors. The locations of the Camshaft Position (CMP) sensors are as follows:
- Cylinder bank 1 Camshaft Position (CMP) Sensor -G40-Right front cylinder head
- Cylinder bank 2 Camshaft Position (CMP) Sensor 2 -G163-Left rear cylinder head
NOTE:
- Cylinder bank 1 = in driving direction, right
- Cylinder bank 2 = in driving direction, left
- Before disconnecting harness connectors, mark allocation to component.
- Connect multimeter to terminal 1 (B+) and 3 (Ground -GND-) of the respective connector for Camshaft Position (CMP) sensor for voltage measurement.
- Switch ignition on.
Specified value: at least 5.0 V
- Switch ignition off.
If there is no voltage:
- Connect test box to control module wiring harness. See TEST BOX FOR WIRING TEST, CONNECTING .
- Check wires between test box and 3-pin connector for open circuits according to wiring diagram.
Wire resistance: max: 1.5 Ω
CMP SENSOR CIRCUIT TEST: OPENS
| Component | Connector | Test box |
|---|---|---|
| Cylinder bank 1 Camshaft Position (CMP) Sensor -G40- | Terminal 1 | Socket 98 |
| Terminal 2 | Socket 87 | |
| Terminal 3 | Socket 108 | |
| Cylinder bank 2 Camshaft Position (CMP) Sensor 2 -G163- | Terminal 1 | Socket 98 |
| Terminal 2 | Socket 86 | |
| Terminal 3 | Socket 108 |
- Also check wires for short circuit to each other.
Specified value: INFINITY Ω
If no malfunctions are found in the wires and there was voltage between terminals 1 & 3:
- Replace the respective Camshaft Position (CMP) sensor:
- Camshaft Position (CMP) Sensor -G40- cylinder bank 1, see COMPONENT OVERVIEW
- Camshaft Position (CMP) Sensor 2 -G163- cylinder bank 2, see COMPONENT OVERVIEW
- Erase DTC memory of Engine Control Module (ECM), see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .
- Generate readiness code. See READINESS CODE, GENERATING .
If no errors are found in wires and there was no voltage between terminals 1 & 3:
- Replace Engine Control Module (ECM). See ENGINE CONTROL MODULE (ECM), REPLACING .