1997 Malibu DTC P1652

'year make model' in all questions please, as first 3 words.

P1652 Code Meaning, Causes, Symptoms, & Tech Notes

Engine-Codes.com https://www.engine-codes.com > p1652
What are the Possible Causes of the Code P1652? · Faulty Cooling Fan 2 Relay · Cooling Fan 2 Relay harness is open or shorted · Cooling Fan 2 Relay circuit poor ...

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  P1652 Nissan Code - Starter Motor System Communication

  https://www.engine-codes.com > p1652_nissan
  What Does the P1652 Nissan Code Mean? The Engine Control Module (ECM) controls ON/OFF state of the starter relay, according to the engine and vehicle condition.

Code P1652 Cooling Fan 2 Relay Control Circuit Conditions

AutoCodes https://www.autocodes.com > p1652
Code P1652 Possible Causes · Faulty Cooling Fan 2 Relay · Cooling Fan 2 Relay harness is open or shorted · Cooling Fan 2 Relay circuit poor electrical connection.

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  Code P1652 Volkswagen Transmission Control Module ...

  https://www.autocodes.com > p1652_volkswagen
  Code P1652 Volkswagen Possible Causes · Faulty Transmission Control Module (TCM) · Transmission Control Module (TCM) harness is open or shorted · Transmission ...

The PCM controls that activation of the cooling fans. I uses three relays to do this. The configuration of the relays is such that failure of any one of them should not result in total fan failure (one or both would still operate). Try this - with the engine running, turn on the A/C. If the fans work, then your problem is that the coolant temp sensor is not telling the PCM the coolant temperature properly. If they still don't work, then, although it doesn't seem likely, I would have the COOLING FAN RELAY, COOLING FAN RELAY 1, and MODE CONTROL RELAY checked. Reason being that the only other possibilities are the PCM and the circuit wiring itself.

it should be the cooling fan relay not fuse. check to see if fan motor is good . run test wires from battery to fan motor to see if it works. if it works its probably the relay

sounds like fan is shorted check fan

P1652 Fan 2 Relay Control Circuit (Except Cadillac & Corvette)/VSS Output Circuit (1996
Corvette)/Powertrain Induced Chassis Pitch Output Circuit (1997- 98 Corvette)/Lift/Drive Output
Circuit (Cadillac)
GM code

did it over heat be for he change the gasket? if os i would be kooking at a head gasket is out

Trouble code P1652 means: Cooling Fan 2 Relay Control Circuit Malfunction

I would start by checking power supply to the cooling fans,making sure the coolant system is full,& using a scn tool to verify the proper operation of the cooling fan system.Here is some info to help you.

The Powertrain Control Module (PCM) controls the operation of the cooling fans. This is accomplished by providing a ground path for the cooling fan relay coils within the PCM. The relay contacts will close and complete the circuit between the fusible link at the battery junction block and the fan motors. Whenever there is a fan ON request both fans will be running.

Power for the fan motors is supplied through a fusible link at the battery junction block. Battery positive voltage is applied to the cooling fan relay contacts and coils. The cooling fan relays are energized when current flows through the relay coils to ground at the PCM. The cooling fan relay #1 control circuit is used for low speed cooling fan operation. The cooling fan relay #1 control circuit and the cooling fan relay #2 and #3 control circuit are both grounded for high speed fan operation. The cooling fan relay control circuits are monitored by the PCM. Before using the Electric Cooling Fans diagnostic tables be sure to perform the Powertrain On-Board Diagnostic System Check. If diagnostic trouble codes P1651 or P1652 are present, use the appropriate DTC diagnostic tables prior to performing Electric Cooling Fans diagnostics.

Important: When certain Diagnostic Trouble Codes (DTCs) are present, the PCM may command the cooling fans to run all the time. It is important to perform the Powertrain On-Board Diagnostic System check prior to diagnosing the engine cooling fans.The PCM will complete the ground path for cooling fan relay #1 under any of the following conditions:
- When engine coolant temperature exceeds 105°C (221°F)
- When A/C is requested and ambient temperature is greater than 10°C (50°F)
- When A/C refrigerant pressure is greater than 190 psi (2 volts)

For high speed cooling fans operation, the PCM will delay control of the cooling fan #2 and #3 relays for 6 seconds. The 6 second delay ensures that the cooling fan electrical load will not exceed the capacity of the system. The PCM will complete the ground paths for cooling fan relays #1, #2, and #3 under any of the following conditions:
- When engine coolant temperature exceeds 113°C (235°F)
- When A/C refrigerant pressure is greater than 275 psi (2.9 volts)

If a problem that involves the low speed cooling fan relay control circuit (cooling fan relay #1 control) exists, DTC P1651 should set. If the problem affects the high speed cooling fan relay control circuit (cooling fan relay #2 and #3 control), DTC P1652 should set. A problem with the ECT sensor should set DTC P0117, P0118, P1114, or P1115. Any of these DTCs will affect cooling fan operation and should be diagnosed before using the Electric Cooling Fan Diagnosis table. The Electric Cooling Fan Diagnosis table should be used to diagnose the PCM controlled cooling fans only if no DTC is set.
Hope this help to solve your poblem (remember rated and comment this help).

What is the correct year ? Above your post it says 2005 Chevrolet Malibu but your post shows 1997 ????? An what size engine ? 3.1 or 3.4 or 2.4 L I would also say your crankshaft position sensor could be bad , but that's just a guess ! Without testing that's all anyone on here can do , guess . Videos on youtube showing how to test crank sensor !

Plus you state that you ohm check ground connections , sorry but that's not the way to check . You do voltage drop testing ? Suggest you watch this . The Trainer 47 What measuring voltage on the ground side means

The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test... How to test for short to ground ohmmeter vs test light

GM Fuel Pump Relay Testing

Check and load test battery. If good, use a volt meter across both terminals.. when.cranking, volts should not drop below 9.5. If it does, replace starter. No valid starter test can be done unless battery has been proven to be good.

I think you may have answered your own question. I would check to see if the fuel pump is turning on when you turn the key on to the run position. You should hear a buzz sound coming from the gas tank. I would start there.