help ! astra j doesn't start with p0689

[hamzaman]

hello
opel astra j 2010 1.7 doesn't start
with p0689 dtc
DTC P0689 00: Engine Controls Ignition Relay Feedback Circuit Low Voltage
any idea
thanks

[sebage]

Have you checked the fuses?

[hamzaman]

Have you checked the fuses?

yes all ok i change the ecu but the same problem

[Bllinda]

Probably a relay, its contacts, mass?

[hamzaman]

Probably a relay, its contacts, mass?

i changed all relays but the same problem

[dehacko]

power relay - connect directly with a cable

[tepSIJA]

Circuit/System Verification
1. Cycle the ignition from OFF to ON. You should hear and feel an audible click from the KR75 Powertrain Relay. Repeat as necessary in order to verify KR75 Powertrain Relay operation.
2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the KR75 Powertrain Relay.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 30 and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. Replace the fuse if necessary.
3. Ignition OFF, connect a test lamp between the control circuit terminal 85 and the B+ circuit terminal 30.
⇒ If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.
4. Ignition ON. The test lamp should turn ON.
⇒ If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If circuit tests normal, replace the K20 Engine Control Module.
5. Install a 20 A fused jumper wire between the B+ circuit terminal 30 and the ignition circuit terminal 87.
6. Attempt to start the engine. The engine should start.
⇒ If the engine does not start, test the ignition circuit between the KR75 Powertrain Relay and the K20 Engine Control Module for a short to ground or for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
7. If all circuits test normal, test or replace the KR75 Powertrain Relay.
Component Testing
Relay Test
1. Ignition OFF, disconnect the KR75 Powertrain Relay.
2. Measure for 70-110 Ω between terminals 85 and 86 of the KR75 Powertrain Relay.
⇒ If the resistance is not within the specified range, replace the KR75 Powertrain Relay.
3. Measure for infinite resistance between following terminals of the KR75 Powertrain Relay:
• Terminals 30 and 86
• Terminals 30 and 87
• Terminals 30 and 85
• Terminals 85 and 87
⇒ If continuity is detected, replace the KR75 Powertrain Relay.
4. Connect a 20 A fused jumper wire from the positive terminal of the battery to KR75 Powertrain Relay terminal 85. Connect a jumper wire from the negative terminal of the battery to KR75 Powertrain Relay terminal 86. Measure for less than 5 Ω between KR75 Powertrain Relay terminal 30 and KR75 Powertrain Relay socket terminal 87.
⇒ If the resistance measures more than 5 Ω, replace the KR75 Powertrain Relay.

[henal]

did you check the wiring ?